TW201230083A - Composite magnetic material, production method thereof, antenna and communication device - Google Patents

Abstract

The present invention provides a composite magnetic material comprising plate-like magnetic particles which are dispersed in an insulating material, wherein the plate-like magnetic particles have an average thickness of 0.01 μ m or more and 0.5 μ m or less, an average major axis of 0.05 μ m or more and 10 μ m or less, and an average aspect ratio (major axis/thickness) of 5 or more, a production method thereof, an antenna provided with the composite magnetic material, and a communication device provided with the antenna.

Description

201230083 VI. TECHNOLOGICAL FIELD OF THE INVENTION The present invention relates to a composite magnetic body, a method of manufacturing the same, an antenna, and a communication device, and more particularly to a VHF that can be suitably used in a frequency band of 70 MHz to 500 MHz. High-frequency circuit board of electromagnetic wave in band, frequency-frequency electronic part, magnetic sheet, electromagnetic wave concealing sheet, resin-bonded magnet, magnetic recording medium, antenna, etc., and composite magnetic body of real part/zr' with high complex permeability And a method of manufacturing the same, an antenna including the composite magnetic body, and a communication device including the antenna. Further, the present invention relates to a monopole antenna in which the above-described composite magnetic body is mounted on a portable terminal in the range of 160 MHz to 222 MHz. This application is filed in Japan according to Japanese Patent Application 2010-266903, which was filed in Japan on November 30, 2010, Japanese Patent Application No. 201 1-064310, which was filed in Japan on March 23, 2011, and Japan, April 25, 2011. Japan's special offer 2011-097157, Japan's special offer 2011-122440, which was applied for in Japan on May 31, 2011, Japan's special offer 2011-167077, which was applied for in Japan on July 29, 2011, and Japan's application on July 29, 2011. Japan's special wish 2011-167078, Japan's special offer 2011-254169, which was applied for in Japan on November 21, 2011, Japan's special offer 2011-257615, which was applied for in Japan on November 25, 2011, and Japan, November 25, 2011 Priority is claimed on Japanese Patent Application No. 2011-257616, the entire disclosure of which is incorporated herein. [Prior Art] Magnetic materials are known to be used as a compound which is mixed and dispersed in an insulating material such as an organic high-grade 323724 3 4 201230083 sub-material for the characteristics, productivity, ease of use, and the like of electromagnetic waves. Magnetic body. The magnetic material is a magnetic recording medium such as an electronic component mounted on an electronic device, a magnetic sheet, an electromagnetic interference suppression sheet, an electric product such as a motor or a transformer, a video tape or a floppy disk (registered trademark). In recent years, with the increase in speed and density of the device, there is a strong demand for electronic components or circuit boards or antennas mounted in electronic devices, especially for miniaturization and low consumption of the materials. Electricityization. In general, the wavelength of the electromagnetic wave transmitted in the substance allows the wavelength h of the electromagnetic wave transmitted in the vacuum to be the real part ε r of the complex permittivity of the substance (hereinafter sometimes abbreviated as £ r), and the complex magnetic The real part yr' of the conductance (hereinafter sometimes abbreviated as yr') is expressed by the following formula (1), λ g = λ 〇 / ( ε rJ · β r' ) 1 / z · · · (1) (1) The larger the er' and / / r', the larger the shortening rate of the wavelength. Therefore, by increasing the ε r′ and # r′ of the magnetic material constituting the electronic component, the circuit board, or the antenna, the shortening rate of the wavelength λ g can be increased, and the electronic component, the circuit board, the antenna, or the like can be miniaturized. . In the material which increases the shortening rate of the wavelength, a composite magnetic body in which magnetic particles are mixed and dispersed in an insulating material constituting an electronic component or a circuit board has been proposed (Patent Document 1). In the composite magnetic body, the shortening rate of the wavelength is increased by increasing /z r'. When spherical magnetic particles are used in the composite magnetic material, it is generally known that the problem of difficulty in increasing the composite magnetic body due to the large demagnetizing factor in each magnetic particle is 323724 4 201230083 Therefore, it has been proposed to use a magnetic particle having a thickness of less than or equal to the thickness of the flat magnetic particle, and to have a flat aspect, a scale shape, a flake shape, and the like. Magnetic particles of various shapes having a large diameter/thickness (for example, refer to Patent Documents 2 and 3). In such a flat magnetic particle, a high order can be obtained in the direction of the lowest depolarization coefficient, i.e., the direction of the long axis. Therefore, the composite magnetic body in which the flat magnetic particles are mixed and dispersed in the insulating material is high in order to effectively apply the effect of the demagnetization factor, and it is necessary to orient the flat magnetic particles in the insulating material in one direction. A method of orienting a flat magnetic particle, a method of forming a magnetic pole between magnets of a magnet containing a flat magnetic particle formed on a substrate (Special 4), and a method of forming a permanent magnet with a permanent magnet (Patent Document 5). In the method, a resin is used as an insulating material, and a magnetic field is applied to the resin under hardening or under the age of (4), thereby orienting the flat magnetic particles. (2) The magnetic properties of the flat plate described in Patent Document 4 or Patent Document 5 are: and in the method of 1, the magnetic material is applied to the flat magnetic body even before the resin is thermally cured or heated. Particle orientation = the problem with the resulting composite Wei body, which is a minor problem. In the miscellaneous diagnosis, the flat magnetic particles of each of the neodymium magnets are arranged, and the hard magnetic particles of the flat magnetic particles are higher, but the method is applied in the (four) field, and (4) the force is small (four) (four) flat 323724 5 201230083 The magnetic particles have poor orientation, and the #r' obtained by the composite magnetic body is small. In particular, when a composite magnetic body having a thickness of 100 # m or more is produced, there is a problem that a good #1*' cannot be obtained. In addition, in the VHF band of 90 to 220 MHz in recent years, it is planned to change from the application of analog TV to other uses from the viewpoint of effective application of radio wave resources. Among these applications, the more promising ones are portable information terminal users. In the portable information terminal, it is difficult to achieve miniaturization of the antenna due to the long wavelength of the radio wave in the VHF band. The antenna or headphone cable comes as an antenna. On the other hand, the 'purpose of the portable information terminal' must be able to receive the portable information terminal even if the portable information terminal is placed in a leather bag or a pocket, so that the antenna is in the portable information. The internalization of the terminal is a necessary matter. Therefore, it is expected that a magnetic material having a large wavelength reduction effect can be achieved and the antenna of the VHF band can be miniaturized. However, when a conventional magnetic material is applied to an antenna of a VHF band, an eddy current is generated on the surface of the magnetic material, and the eddy current generates a magnetic field toward a change in the applied magnetic field, thereby having a magnetic permeability of the magnetic material. Significantly reduce the problem point. Further, since the increase in the eddy current causes the energy generated by the Joule heat to be consumed, it is difficult to use the magnetic material as a material such as an antenna or an electronic component. Patent Document 6' proposes a composite in which a spherical or flat magnetic powder is divided into a rim material, and is a real part of a complex magnetic permeability of 1 GHz... at 1, and a loss tangent of complex magnetic permeability is occupied by (The following is abbreviated as tan occupant ", rabbit Ί &>> is a composite magnetic body of 0.1 or less. 6 323724 201230083 According to the composite magnetic body, magnetic properties due to eddy current can be avoided. Deterioration 'in the frequency band of 500 MHz to 1 GHz can also reduce the loss. On the other hand, as a magnetic material that can be used in the VHF band, a high-frequency ferrite is proposed. However, the composite proposed in Patent Document 6 In the magnetic body, although the deterioration of the magnetic characteristics due to the thirsty current and the loss in the frequency band of 500 MHz to 1 GHz can be reduced, in the frequency lower than 500 Μ Η z, the loss tangent increases, especially to 100 MHz. Loss tangent tan (5 # is 0·1 or more. Even if the composite magnetic body is applied to an antenna of the VHF band, it is difficult to achieve a problem of further miniaturization of the antenna. VHF tb' Used in the VHF band, but due to the The frequency of resonance noise is more pronounced in the frequency band, so it is more difficult to carry out the problem of circuit design. Reliable 2, because of the fertilization of iron, it has shape processing or The problem of mechanical production is 'so that' when the portable information terminal is used, the king ♦ is more limited, so it is not good. The characteristic impedance Zg is as follows, and the characteristic impedance of the vacuum can be used, and Ζ., (booking ' / ε r,) 1/2 · ·. (2) Sexual resistance: The smaller the difference between the values of equation (2)' η and #, the special-degree in vacuum: the smaller the difference from the value of the characteristic impedance Zg of the composite magnetic body The other impedance z* is almost the same value as the characteristic impedance of the space in which the electric wave travels and the vacuum characteristic, so the smaller the difference between the values of ^ and ^, the power loss for impedance matching can be suppressed. 323724 7 201230083 In addition, by the formula (1), it can be known that when the wavelength of the electromagnetic wave is short, the value of θ plus ει· and #1· is required, but the larger the difference is, the receiver can receive Frequency of transmission:: This, in order to receive and transmit more resources in a wide frequency band The difference between the value of lion r and the value of //r'. 4 eagle J ε Therefore, as a composite that can achieve miniaturization of electronic parts or electronic devices and suppress power secrets, and receive more information in a wide frequency band. The magnetic body has been proposed by dispersing spherical magnetic particles in an insulating material to set a frequency of 1 GHz, 丨5 or more. er 0.2.ΧΤ» ^(^rVer^)1-^ 〇 .5, 复合^ ι τ composite magnetic body (Patent Document 7). In the composite magnetic material described in Patent Document 7, since the spherical magnetic particles are used, the demagnetizing field of each magnetic particle When the coefficient is increased, the resulting composite magnetic body is insufficient, and even if the power loss due to impedance matching can be suppressed, there is still a problem that the electronic component or the electronic device is insufficient in size. On the other hand, in the composite magnetic material described in Patent Document 8, since a highly conductive metal material is used as the flat magnetic particles, the value of yr' of the composite magnetic material is also large, but the magnetic particles and the insulating material are insulated. The interface of the material has an electrostatic capacitance, which causes the value of 'to be increased above the required level' and the power loss caused by impedance matching increases. The power loss of the shai, for example, becomes an output loss of the electromagnetic wave when the antenna receives and transmits the electromagnetic wave, and the emission efficiency of the most important performance of the antenna is lowered. In addition, since the difference between #r' and ε r is widened, there is also a problem that the frequency band of the antenna can be narrowed by receiving the transmission of 8 323724 201230083. Furthermore, in most of the magnetic particles, 々r is smaller than e r' (μι·' < ε r'), and the composite magnetic body itself is increased by modifying the magnetic particles themselves. It will increase the value of £r' to the required level or more, and it is impossible to achieve miniaturization of electronic components or electronic devices. In addition, power loss cannot be suppressed, and there is a wide band that cannot achieve the frequency at which the antenna can transmit and transmit. The problem of the problem. Such a problem has become a major problem in the use of electronic devices such as mobile phones, portable information terminals, and portable information devices such as portable information devices, which are particularly required to be miniaturized. In particular, in a multi-functional portable information terminal such as a smart phone which has been widely used recently, since a strong electric field is generated from a display unit having substantially the same size as a casing, electromagnetic waves are required to be separated from the display unit. Therefore, the antenna must be placed at a position that does not overlap the display or at a position spaced apart from the display. However, the position of the antenna in the frame can be limited and it is an extremely narrow area. On the other hand, the Ι-Seg broadcast and the multimedia broadcast used in the portable information device have to receive electromagnetic waves in a wide wavelength region because the wavelength of the electromagnetic wave used is long. In the past, small antennas in the casing have not been able to obtain sufficient reception performance. Therefore, it has been proposed to extend the antenna portion to the frame for a small number of times for the purpose of receiving such broadcasts. The whip antenna of the length is set in the outside of the frame. However, even when the whip antenna is used, when the portable information device 9 323724 201230083 is placed in a purse or a pocket or the like, the whip antenna cannot be elongated, and there is still a problem that it is difficult to receive such broadcast. In addition, in recent years, the lowest frequency band of electromagnetic waves used in portable terminals is terrestrial digital broadcasting for mobile applications (from 470 MHz to 770 MHz. In addition, Japan is planning to apply 2 to 7 MHz to 222 MHz as a portable terminal. Multimedia broadcasting for use. In addition, Korea wants to apply a frequency band of 180 MHz to 210 MHz in digital broadcasting. The antenna used in such a portable terminal must be a small antenna that can be mounted on a portable terminal. Antenna resonance requires the use of a 1/4-length antenna conductor. In a band with a low frequency and a long wavelength such as 160 MHz to 222 MHz, there is a problem that the antenna becomes too large when it is mounted on a portable terminal. Patent Document 9 proposes a method of miniaturizing a magnetic antenna by a wavelength shortening effect by using ferrite iron having a high magnetic permeability. However, in the technique described in Patent Document 9, due to the fat grain The iron-like ceramic material has a small magnetic permeability in the range of 160 MHz to 222 MHz, so the wavelength shortening effect is small, and the antenna cannot be sufficiently obtained. In addition, the shape of the ceramic material is limited, and the shape of the ceramic material is limited. (Prior Art Document) (Patent Document) (Patent Document 1) Japanese Patent Laid-Open Publication No. 2004-087627 (Patent Literature) (2) Japanese Patent Laid-Open Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. Japanese Laid-Open Patent Publication No. 2008-181092 (Patent Document No.) JP-A-2009-159244 SUMMARY OF INVENTION Technical Problem The present invention has been made in view of the above circumstances, and an object thereof is to provide a frequency band in which a frequency band of 70 MHz to 5 〇〇 MHz can be applied, and the frequency band is The real part of the complex magnetic permeability μ r 'large 'complex permeability loss tangent tan 占 # 丨 丨 丨 丨 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合The purpose In order to reduce the size of the electronic component or the electronic device, the real part of the complex magnetic permeability is sufficiently large and the value of the real part of the complex magnetic permeability #1·' is complex The difference in the value of the real part er' of the dielectric constant is reduced, and as a result, the electronic component or the electronic device can be miniaturized, and the power loss due to impedance matching can be suppressed and the wide-band composite magnetic body and the antenna having the same can be realized. Further, it is an object of the invention to provide a composite magnetic body which is a real part which improves the complex magnetic permeability by orienting the flat magnetic particles in a resin, a method for producing the same, an antenna, and a communication device. Furthermore, the object is to provide a small plastic 323724 11 201230083 monopole antenna which can also be applied in a low frequency band of 16 MHZ to 2 2 2 MHz and can be mounted on a portable terminal. (Means for Solving the Problems) The inventors of the present invention have found the following findings in order to solve the above problems. Carefully explore

That is, it is found that if the average thickness is below, the average long diameter is a flat magnetic body having a ratio of the above ratio (long diameter/thickness) of 5 or more: a composite magnetic body made of a material having a length and a width, the magnetic body can be made magnetic. The surface of the complex magnetic body of the complex magnetic permeability in the frequency band of the insulating to simple Hz z The loss tangent of the magnetic permeability tan5 // is less than 1 ' below 〇·1 and the composite magnetic body is applied to the antenna of the erbium band, As a result, P' can be miniaturized, and the antenna is further integrated into the two antennas in the information terminal, and the flat magnetic particles are dispersed in the complex magnetic body in the insulating material, when the flat magnetic particles are In a small amount, the volume of the four (4) sentences is scattered in the insulating material. As the amount of the flat magnetic particles increases, the flat magnetic particles entangle or condense, creating a space between the plate-shaped magnetic particles. It is difficult for the insulating material to enter the space, and as a result, the gap between the flat magnetic particles arranged in parallel with each other when the flat-shaped body particles are oriented in one direction is generated in the obtained composite magnetic body. Become extremely narrow, absolutely It is difficult for the edge material to enter the narrow space. As a result, pores are generated in the obtained composite magnetic body. Therefore, it has been found that when the flat magnetic particles are dispersed in the insulating material, the pores generated between the flat magnetic particles can be reduced, and although the value of VI·' is increased, ε r, The value is almost constant, and the result can be reduced by the difference between the value of 323724 12 201230083 and the value of εΓ'. Further, when a conventional bisphenol type epoxy resin and flat magnetic particles are mixed as an insulating material, the obtained molding material, the sulfhydryl group of the epoxy resin is adsorbed on the surface of the flat magnetic particles, and the polymer is made of a polymer. The chain surrounds the periphery of the magnetic particles and is wound in a long state. Such a polymer chain is a molding material in a state of being wound up in a long manner, and the polymer chain may become a steric obstacle and hinder the orientation of the flat magnetic particles. Therefore, in order to improve the fluidity of the flat magnetic particles, even if the amount of the solvent in the molding material is increased and the viscosity is high on the macroscopic view, the influence of the three-dimensional P of the polymer chain is still large, and the flat shape is still hindered. Orientation of magnetic particles. In the case of F, in order to reduce the influence of the steric hindrance of the polymer chain and to shrink the knife chain, the condensation or bonding reaction to the molecular chains is insufficient, and as a result, the mechanical strength of the resulting composite bribe is lowered, depending on the situation. There are even doubts about the inability to change shape, so it cannot be used in electronic parts or circuit bases. In order to reduce the influence of the steric obstacle of the polymer chain, the chain has a flat surface and is not easily entangled in the flat magnetic particles. When the flat magnetic particles are lifted, the magnetic particles are only V in the magnetic field. Orientation. Furthermore, by using the polymerized functional group, the tree chain having a functional group polymerized in a monomer unit is shorter, and more bonds are formed, thereby increasing the mechanical strength of the obtained complex magnetic body. It is also easy to maintain the shape. In addition, it was found that: in the case of a resin which is excellent in flexibility and flexibility, 323724 13 201230083 is added to a resin having a ring structure in which the main chain has a tendency to be entangled with the flat magnetic particles, and the resin can enter the flat magnetic state. The gaps between the bulk particles can be used to obtain the real part #r' of the complex magnetic permeability of the composite magnetic body, and further improve the releasability of the composite magnetic body from the substrate, and the composite magnetic body with good productivity . Further, it has been found that when the resin and the flat magnetic particles are mixed and the molding material is molded and a magnetic field is applied, the magnetic field is applied in a substantially parallel manner to the surface of the molded body to increase the composite magnetic property. The real part of the complex magnetic permeability of the body yr'. Further, it has been found that the conductor of the monopole antenna is coated with the above composite magnetic material, and the antenna can be miniaturized. That is, the present invention relates to the following. (1) A composite magnetic body obtained by dispersing flat magnetic particles in an insulating material, wherein the average thickness of the flat magnetic particles is 0.01 or more and 0.5/zm or less, and the average long diameter is 0.05 am or more. 1 〇 ym or less, and the aspect ratio (length ratio / thickness) is 5 or more. (2) The composite magnetic body according to (1) above, wherein the real part ar of the complex magnetic permeability in the frequency band of 500 MHz is larger than 1, and the loss of the complex magnetic permeability is tangent tan (5 y is 0. (1) The composite magnetic body according to the above (1), wherein the real part v r' of the complex magnetic permeability in the frequency band of 7 〇 MHz to 500 MHz is greater than 7, and the loss tangent of the complex magnetic permeability Tan 5 // is 〇. 1 or less. (4) The composite magnetic body as described in (1) above, the real part of the complex magnetic permeability of the frequency band of 7〇MHz to 323724 14 201230083 5〇〇MHZ (r) is greater than 10, and the loss tangent ta of the complex magnetic permeability is 〇1 or less. (5) The composite magnetic body according to (1), wherein the flat magnetic particle is selected from the group consisting of Aluminum (A1), chromium (Cr), manganese (Μη), cobalt (Co), copper (Cu), zinc (Zn), niobium (Nb), turn (M〇), indium (In), tin (Sn) (6) The composite magnetic body according to the above (1), wherein the flat magnetic particles are by an average particle diameter 〇 Spherical magnetic particles below 5#m (7) The composite magnetic body according to (1), wherein the real magnetic body of the complex magnetic frequency in the frequency band of 220 MHz is set, (6) The composite magnetic body according to the above (1), wherein the porosity is 2% or less. (9) As described above (1) 8) The composite magnetic body according to the above, wherein the real part of the complex magnetic permeability in the frequency band of 7 〇ΜΗζ to 500 MHz is 7 or more, and the real part er' of the complex dielectric constant is 15 or more, and (1), 1/2 is 〇 以下 以下 以下 以下 以下 以下 以下 以下 以下 以下 以下 以下 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合 复合The loss tangent of the complex magnetic permeability in the frequency band of the frequency range of from MHz to 500 MHz is 〇〇5 or less, and the complex dielectric constant of the complex dielectric constant is less than or equal to the above. (1) The composite magnetic material according to the above (1), wherein the insulating material is - The first resin having a functional group in which the main chain has a structure and polymerized in the unit body. 323724 15 201230083 (12) The compound as described in the above (11) The above-mentioned resin is a thermosetting resin. The composite magnetic material according to the above (11), wherein the resin is an epoxy resin. (14) The composite magnetic body as described in the above (11) The composite magnetic material according to the above (11), wherein the orientation direction of the resin in the flat magnetic particle is the same as the flat plate The angle formed by the long-axis direction of the magnetic particles is 20 or less. (16) The composite magnetic body according to the above (11), wherein the real part #r' of the complex magnetic permeability in the frequency band of 70 MHz to 500 MHz is 7 or more. (17) The composite magnetic material according to the above (11), further comprising a second resin which imparts flexibility to the first resin. (18) The composite magnetic material according to the above (17), wherein the second resin is an epoxy resin having at least one of a bisphenol A type skeleton and a bisphenol F type skeleton. (19) The composite magnetic material according to the above (17), wherein the second resin is an epoxy resin having two or more epoxy groups in one molecule and having an ether skeleton. (20) The composite magnetic material according to the above (17), wherein the second resin is an epoxy resin having any one of a propylene glycol addition bisphenol A type skeleton and an ethylene glycol addition bisphenol A type skeleton. . (21) The composite magnetic body according to the above (17), wherein the real part /zr' of the complex magnetic permeability in the frequency band of 70 MHz to 500 MHz is 7 or more. A composite magnetic body according to any one of the above (1) to (21), which is provided with an average particle diameter of 〇. a slurry in which spherical magnetic particles of 5 am or less are dispersed in a solution containing a surfactant, and a dispersion medium are filled in a container which can be filled in a male or a closed container so that the total volume of the slurry and the dispersion medium is as described above. a second step in which the volume in H is the same, and the poly-liquid is mixed with the dispersion medium (10) in a sealed state, and the magnetic particles are deformed and dissolved to form a flat magnetic recording device; The magnetic f raw body is dispersed and mixed in the second step of the solvent towel (four) edge = molding material; and the molding step of obtaining the formed body by the above-mentioned formation: The third step of the drying/hardening step of drying/hardening of the shaped body. (3) The method for producing a composite magnetic material according to the above (22), wherein the insulating material is a resin having a cyclic structure and a functional group polymerized at a monomer position. (24) The method for producing a composite magnetic body according to the above (22), wherein: in the third (fourth) towel, in the step of forming the material, the magnetic field is applied to the body towel. The aforementioned planar core, the orientation step of the early orientation is followed by the aforementioned drying/hardening step. (25) An antenna comprising the composite magnetic body according to any one of the above (1) to (21). , to make. (10) A communication device comprising the antenna according to the above (25), wherein the antenna conductor is covered by the 323724 17 201230083 composite magnetic body as described in the above (1). (28) (27) The monopole antenna according to the above aspect, wherein the complex magnetic body has a real part y r' of a complex magnetic permeability in a frequency band of 160 MHz to 222 MHz of 3 or more. (29) A single sheet as described in the above (28) The monopole antenna according to the above (27), wherein the composite magnetic body has a frequency of 160 MHz to 222 MHz. The thickness of the composite magnetic body is 1. 2mm or more and l〇mm or less. The thickness of the composite magnetic body is 1. 2mm or more and l〇mm or less. (32) The monopole antenna according to the above (27), wherein the length of the antenna conductor is 200 mm or less. (Effect of the invention) The composite magnetic body according to the present invention has an average thickness of 〇. 01 Vm or more. 0. Hereinafter, the average long diameter is 〇. 〇5y m or more and 5ym or less' and the average aspect ratio (long pole/thickness) is a flat magnetic particle of 5 or more, so that the real part of the complex magnetic permeability in the frequency band of 70 MHz to 500 MHz can be greater than 1, and the loss of complex magnetic permeability tangent tan ( 5 " is 0.1 or less, so that the shortening rate of the wavelength in the frequency band can be greatly increased. Therefore, if the composite magnetic body is applied to the antenna of the VHF band, the generation of eddy current on the surface of the composite magnetic body can be prevented. In order to prevent the reduction of er', the antenna can be further miniaturized. Therefore, if the composite magnetic body is applied to an antenna of the VHF band or an electric component of the 203724 201230083, the antenna or the electronic component can be further miniaturized. In the composite magnetic material of the present invention, the porosity of the composite magnetic material having the flat magnetic particles is 20% or less, and the value of the real part #!' of the complex magnetic permeability is increased, but the complex magnetic material can be increased. The value of the real part ε r' of the dielectric constant is almost constant. Therefore, the difference between the value of the real part #r' of the complex magnetic permeability and the value of the real part ε r' of the complex permittivity can be reduced. Electron applying the composite magnetic body The device or the electronic device is miniaturized, and the power loss caused by the impedance matching is suppressed. The composite magnetic body according to the present invention contains the above-mentioned flat magnetic particles and the main chain has a cyclic structure and has a monomer unit Since the first resin of the polymerized functional group has a structure in which the resin is flat and is not easily entangled with the flat magnetic particles, the influence of the steric obstacle formed by the resin on the flat magnetic particles can be reduced. A composite magnetic body having a good orientation of the flat magnetic particles and a real part of the complex magnetic permeability #r' can be obtained. Further, since a resin having a functional group polymerized in a monomer unit is used, the bonding of the resin can be made strong, and sufficient mechanical strength can be used as a molded body such as an electronic component. The composite magnetic material according to the present invention contains the above-mentioned flat magnetic particles, a first resin having a cyclic structure in a main chain and having a functional group polymerized in a monomer unit, and flexibility imparted to the first resin. Since the second resin has a cyclic structure and a first resin having a functional group polymerized in a monomer unit, the effect of the steric hindrance formed by the resin on the flat magnetic particles can be reduced. . Therefore, the orientation of the flat-shaped 19 323724 201230083 magnetic particles can be improved, and the composite magnetic body of the real part of the complex magnetic permeability can be easily obtained. Further, since the second resin imparts flexibility to the second resin, the flexibility and stretchability of the composite magnetic body itself can be improved, and as a result, a composite magnetic body excellent in productivity can be obtained. According to the method for producing a composite magnetic material of the present invention, the slurry and the dispersion medium f obtained by dispersing the spherical magnetic particles of the average granules in the raw material are filled in the sealable 4, The total volume of the slurry and the dispersion medium is the same as the volume in the container, and the slurry is kneaded in the sealed medium in a sealed state, and the spherical magnetic particles are deformed and refined into a flat plate. The i-th step of the magnetic particles; the second step of dispersing and mixing the flat magnetic particles in a molten forming material in which an insulating material is dissolved and dissolved; and including the right: forming or coating on the base The forming step of forming the material on the material is described as the third step of the drying/hardening step of the forming and drying of the formed body. The frequency wave of 70 MHz to 5 GG MHz is easily produced. ;r, large, and complex magnetic permeability loss tangent tand < complex magnetic permeability of the composite magnetic body. 々为〇·1 or less, when using a resin with a main chain (4) I and (a) polymerized functional group as an insulating material, the early orientation of the plate can be used.) The orientation of the plate-like magnetic particles is good, and the complex magnetic field is easy. A composite magnetic body was produced. The tamping lamp is 'high.' In the third step, a magnetic field is applied to the molded body obtained after the forming step 20 323724 201230083 to orient the flat magnetic particles in the formed body in one direction. In the orientation step, when the drying/hardening step is carried out, a composite magnetic body in which the orientation of the flat magnetic particles is better and the real part #r' of the complex magnetic permeability is higher can be easily produced. According to the antenna of the present invention, since the composite magnetic body is provided, the antenna conductor can be shortened to a longer wavelength by using a composite magnetic body having a real part #r' of a complex magnetic permeability in a frequency band of 70 MHz to 500 MHz. The 1/4 is shorter, and the entire antenna is miniaturized. Therefore, an antenna for further miniaturization can be provided. Further, when a composite magnetic body having a porosity of 20% or less is provided, the emission efficiency can be improved. Therefore, it is possible to provide an antenna which is small and suppresses power loss due to impedance matching, is miniaturized and has high transmission efficiency, and can be used in a wide band of 70 MHz to 500 MHz. In addition, when the composite magnetic material including the first resin having a cyclic structure in the main chain and having a functional group polymerized in a monomer unit as the insulating material is provided, the first resin and the first resin may be contained. When the flexible second resin is used as the composite magnetic material of the insulating material, a higher #r' can be obtained, so that an antenna which is further miniaturized can be provided. According to the communication device of the present invention, since the antenna is provided, it is possible to achieve miniaturization of the entire communication device by using the miniaturized antenna. Therefore, it is possible to provide a communication device that further achieves miniaturization. In addition, when an antenna having a composite magnetic body having a porosity of 20% or less is mounted, an antenna that is small in size and high in emission efficiency and can be used in a wide band 21 323724 201230083 can be used to realize the entire communication device. Miniaturization and improved communication performance. Therefore, it is possible to provide a communication device which is further miniaturized and can be used in a wide band of 70 MHz to 500 MHz. According to the monopole antenna of the present invention, since the composite magnetic body is coated on the antenna conductor, the antenna conductor can be shortened to be shorter than 1/4 of the wavelength, and can be received, transmitted, or received at a low frequency of 160 MHz to 222 MHz. A radio wave in the frequency band and can be mounted on a small monopole antenna of a portable terminal. [Embodiment] Hereinafter, a composite magnetic body, a method for producing the same, an antenna, and a communication device for carrying out the present invention will be described. It is to be understood that the present invention is not limited thereto, and the present invention is not limited thereto. [First composite magnetic material] The composite magnetic material of the present embodiment is a composite magnetic body in which flat magnetic particles are dispersed in an insulating material, and the average thickness of the flat magnetic particles is Ο.ΟΙ/ A composite magnetic body having an average aspect ratio of 0.5/zm or less and an average aspect ratio of 0.05/zm or more and 10/zm or less and an average aspect ratio (longitudinal diameter/thickness) of 5 or more. The average thickness and the average major axis can be measured by measuring the respective thicknesses and long diameters (maximum lengths in the particles) of the plurality of flat magnetic particles, for example, 100 or more, preferably 500 or more flat magnetic particles. Each thickness and long diameter are calculated, and the average values of the thickness and the long diameter are calculated. Further, the average aspect ratio of the flat magnetic particles (long diameter/thickness 22 323724 201230083 fm is the same), and the == r of the plurality of plate-shaped impurity particles can be, for example, _ or more, preferably _ The respective flatness and thickness of the above-mentioned magnetic body were determined by taking the average value of each of the flatness/county ratio (long diameter/thickness) and calculating the average of these aspect ratios (length/thickness). The average thickness of the tabular magnetic particles is 〇〇1 (four) or more 〇5: two, preferably 0.012 _ 〇 心 3 hearts

0. 05 # m above 1 〇 &quot; m IV 丁 ., ^ J 下下. 1〇_以下, preferably 〇.5&quot;The above 5_ is made, =1 is 1=the thickness is not reached'. As described later, it is difficult to make w and the miscellaneous (4) is difficult, so it is not good, too much. It is caused by the fusion of the particles with each other. =: The loss of the complex magnetic permeability of the Kelly band is 5, and the average length and width of the flat magnetic particles are more than 7 or more. The ratio (long diameter/thickness) is preferably lowered, so it is not preferable here, although the average aspect ratio (long diameter/thickness) is less than 5, the flat shape: the _ two-factor is increased, and as a result, the composite two = the flat plate The magnetic body is as follows. The shape of the particles is limited to the above range and the shape of the magnetic particles is present in the direction of the demagnetizing field, so that the demagnetizing field of the excellent magnetic particles is obtained in the T% frequency region. For example, when the magnetic particles are spherical, the magnetic permeability obtained is also isotropic, and it is difficult to 323724 23 201230083 = flat =, when the shape of the magnetic particles is in the above range, the demagnetizing field in the direction of the thousand plates = 仃It can be greatly reduced, thus increasing the resulting /zr. Therefore, by using the above-mentioned flat magnetic body to the complex magnetic frequency in the frequency band of 500 MHz, the real part β r of the hand such as (4) λα μ τ (4) is larger than 1, and the complex magnetic material of °, 1 or less is formed. The real part W of the complex magnetic permeability is preferably 5 or more, and particularly (four) Μ or more. Second, the real part of the magnetic permeability, and the loss of the complex permeability tangent tanO is limited to the above range, because the range is that the wavelength of the electromagnetic wave can be shortened and the eddy current can be reduced. The reason for reducing the energy loss. In the composite magnetic body, it is particularly preferable that the real magnetic permeability of the frequency band of 9_422 波段 is greater than i, and the loss tangent _ 〇 is 0.05 or less. The magnitude of the energy loss can be expressed by the imaginary part of the complex magnetic permeability represented by the following formula (3) / / r &quot; (hereinafter sometimes abbreviated as r&quot;). ^r&quot; = ^r, xtand //---(3) Here, since the imaginary part of the complex magnetic permeability is 1·&quot; preferably 〇. 5 or less, from the above formula (3), It is understood that when 胄10, it is preferably 0.05 or less, and when ^^' is 15, tan<5> is preferably 1/3 〇 or less. The composition of the flat magnetic particles is preferably Fe-Ni alloy such as Permall〇y (trade name), Fe_Ni-M〇 alloy such as Supermalloy (trade name), or Fe-Si-Al alloy such as Sendust (trade name). , Fe_Si alloy, 323724 24 201230083

Fe-Co alloy, Fe-Cr, I?r 〇. Human a r gold, Fe-Cr-Si alloy and other high magnetic permeability, ^ added fine), chromium (Cr), fierce (10), boots. ), steel two gold =), sharp (10)), _. The addition of the metal element of the flat magnetic particle of the metal element such as indium (In) or tin (10) is (M: 90% or more, more preferably = % by mass or less), more preferably 1% by mass or more The reason why the amount of the metal element added is limited to the above range is that when the amount of the metal element added is less than Q1% by mass, the plasticity of the I method is changed to the magnetic front. On the other hand, when the amount of % is too large, the magnetic moment of the metal element itself is small, and the second one: the saturation strength of the whole part of the child is lowered, and as a result, the obtained order is also small, so that 0 is particularly high. It is preferable that the content of i f4% or more and 5% by mass or less is selected from the group consisting of Shao (9), complex (Cr), M (Mn), _〇, ° copper (Cu), zinc (Zn), sharp (10), and An iron-nickel alloy of one or two or more metal elements of Mo), indium (In), and tin (10). The insulating material 'is not particularly limited as long as it is an insulating material. 'When the composite magnetic body of the present embodiment is used as a row (four) speech antenna or a portable information terminal antenna, it is preferable that the 糸9 has a high degree of touch. It has low hygroscopicity and good shape processability. Such an insulating material, for example, may be suitably used, such as a polyimide resin, an azole resin such as polybenzopyrene, a polyfluorene~^ ash resin, a polybenzocyclobutene resin, and a poly-strand. Ether Resin, & ^ ^ . s &quot; Polysiloxane Resin, Epoxy Resin, Polyester Resin, Fluoro Resin, 323724 25 201230083 Polyolefin Resin, Polycycloolefin Resin, Cyanic Acid A thermosetting resin such as an ester resin, a polyphenylene resin, a norbornene resin, an ABS resin, or a polystyrene resin, or a thermoplastic wax. These resins may be used alone or in combination of two or more. In the case of 117, the thermosetting resin is preferably an epoxy resin excellent in mechanical strength and shape processability, and the thermoplastic resin is preferably a polyphenylene resin or an octagonal resin. [Manufacturing method of the first composite magnetic material] The method for producing a composite magnetic material according to the present embodiment includes dispersing spherical magnetic particles having an average particle size of 0.5 (four) or less in a (four) towel containing an interface=agent. And (4) and the dispersion medium f are filled in the sealable medium, so that the total volume of the liquid and the dispersion medium is the same as the volume in the container, and the decomposed liquid is dispersed in the sealed state a first step of deforming the spherical heteroparticles and squeezing the slab-shaped magnetic particles with each other, and dispersing the spheroidal magnetic particles in a solution in which a solution of the insulating material is dissolved in a solvent And the third step of forming the shaped body: the forming step of the molded body on the substrate, and the drying/hardening (4) of drying/hardening. The following is a detailed description of each step. &lt;First Step&gt; A slurry is formed by dispersing spherical heteroparticles containing a uniform particle size, and a solution of a lingual agent on one side. The formation of the magnetic particles is identical to the composition of the above-mentioned flat magnetic particles 323724 26 201230083 *. The surfactant is preferably a surfactant containing an element such as nitrogen, scale, or sulfur which is excellent in compatibility with the surface of the magnetic particle, and examples thereof include a nitrogen-containing in-segment copolymer, a carbonate, and a polyethylene-based ratio. u each ketone and the like. The solvent for dissolving the surfactant is preferably an organic solvent because it is required to prevent oxidation of a metal element contained in the magnetic particles, and particularly preferably xylene, toluene, cyclopentanone, or ring. A non-polar organic solvent such as ketone. Then, the slurry and the dispersion medium are filled in a closable container so that the total volume of the slurry and the dispersion medium is the same as the volume in the container, and the slurry is stirred together with the dispersion medium in a sealed state to form a spherical shape. The magnetic particles are deformed and fused together to form flat magnetic particles. The dispersion medium must have a higher hardness than the spherical magnetic particles, and examples thereof include metal spheres such as aluminum, stell, stainless steel, and lead, and metal oxides such as alumina, ceria, cerium oxide, and titanium oxide. Or a spherical sintered body made of an inorganic oxide, a spherical sintered body made of an inorganic nitride such as tantalum nitride, a spherical sintered body made of inorganic carbide such as tantalum carbide, and a soda glass or lead glass. A spherical particle called a bead, which is composed of a high-specific gravity glass. Among them, in terms of efficiency, it is preferably a specific gravity of 6 or more, &quot;&quot;&quot; 'oxidation error, steel, non-recorded steel Wait. The application of the mechanical stress to the spherical magnetic particles is carried out by the impact when the dispersion medium collides, and as the number of collisions of the dispersion medium increases, the deformation and the fusion property of the spherical magnetic particles are improved. Thus, the smaller the average particle size of the dispersion medium, the more the number of 323724 27 201230083 per unit volume increases, the number of collisions increases, and the deformation and refining properties are improved, but on the other hand, when the average particle size of the dispersion medium is excessive In hours, it is difficult to separate the dispersion medium from the slurry. 01毫米以上。 The average particle size of the dispersion medium must be at least 0. 03mm or more, preferably 0. 04mm or more. Further, when the average particle diameter of the dispersion medium is too large, the number of collisions is reduced, and the deformation and the meltability of the spherical magnetic particles are lowered. 0毫米。 The upper limit of the average particle size of the dispersion medium is 3. 0mm. The hermetically sealable container is preferably a hermetic container which can rotate the slurry and the dispersion medium at a high speed by rotating a uniaxial rotating body such as a disk, a screw or a blade at a high speed. Since the sealed container is a simple uniaxial rotation method, it is easy to be enlarged, and it is advantageous in industrial production. Further, an inlet and an outlet for introducing and discharging the slurry into the container may be provided in the sealable container, and the slurry may be circulated in the sealed container. In this case, the dispersion medium may be contained in a sealed container in advance, and a slurry in which spherical magnetic particles, a surfactant, and a solvent are mixed may be introduced from the inlet, filled in the container so that there is no space, and then discharged from the outlet. The slurry is again placed in a closed container. Here, the filling amount of the slurry and the dispersion medium in the sealed container is the same as the volume in the sealed container. In other words, the slurry and the dispersion medium are filled in the sealed container in such a manner that no gap exists. Here, the reason why the slurry and the dispersion medium are filled in the sealed container so as not to have a gap is as follows. 1 is a view showing a state in which the slurry ι 53 containing the spherical magnetic particles 152 and the dispersion medium 154 which are placed in the open container 151 opened at the upper portion of 28 323 724 201230083 by the uniaxial rotating body 155 are rotated at a high speed to perform high-speed stirring. Figure. In the figure, when the uniaxial rotating body 155 is rotated at a high speed, the liquid surface of the slurry 153 and the dispersion medium 154 is formed in a mortar shape which is low in the vicinity of the central axis and high in the peripheral portion due to the centrifugal force. The mechanical stress applied to the poly-liquid 153 containing the spherical magnetic particles 152 and the dispersion medium 154 by the uniaxial rotating body 155 escapes into a spider-like space, so that the entire open container 151 is passed through the dispersion medium 154. The mechanical stress transmitted to the spherical magnetic particles 152 becomes uneven, resulting in irregular thickness of the resulting flat magnetic particles. In addition, in the vicinity of the bottom of the spider-shaped space (near the central axis), the magnetic particles of the flat magnetic particles are released into the mortar-like space together with the dispersion medium to withstand an irregular impact. Or doubts such as defects. As a result, the thickness of the magnetic particles is irregular or broken or defective, and is a factor of increase in the loss tangent of the complex magnetic permeability in the VHF band. Fig. 2 shows that the uniaxial rotating body 155 is used to make the sealing The slurry 153 containing the spherical magnetic particles 152 of the container 1511 and the dispersion medium 154 are rotated at a high speed to perform high-speed stirring. In the figure, even if the uniaxial rotating body 155 rotates at a high speed, the sealed container 1511 contains a spherical shape. Since the liquid 153 of the magnetic particles 152 and the dispersion medium 154 are filled, there is no doubt that the mortar-like space as seen in the open container 151 is generated. Therefore, the uniaxial rotating body 155 is spherical. The mechanical stress ' 323 724 29 201230083 applied to the slurry 153 of the magnetic good 152 and the dispersion medium 154 is uniformly transferred to the spherical magnetic particles 152 through the dispersion medium 154 in the entire closed container 1511 without the resulting flat magnetic body. There is no doubt about the thickness of the particles. In addition, the magnetic particles that are flat will not withstand irregular impacts, and there will be no doubt that cracks or defects will occur. The number of revolutions of the uniaxial rotating body 155 is determined by the size of the hermetic container 1511. For example, in the case of the hermetic container 1511 having an inner diameter of 120 mm, the slurry 153 containing the spherical magnetic particles 152 and the dispersion medium 154 are located near the inner wall of the closed container 1511. The flow rate is preferably 5 m/sec or more, and more preferably 8 Å/sec or more. Further, when the internal volume of the hermetic container 1511 is small, the spherical magnetic particles 152 remain in the obtained flat magnetic particles. It is a concern that the residual spherical magnetic particles 152 are in contact with the spherical magnetic particles 152 or the spherical magnetic particles 152 are in contact with the flat magnetic particles, and the magnetic loss is increased or the orientation of the flat magnetic particles is hindered. Therefore, the flat magnetic particles are preferably 9% by mass or more, more preferably 95% by mass or more, and still more preferably 99% by mass or more, and preferably substantially free of spherical magnetic properties. Particle 152. Here, the reason why the spherical magnetic particle 152 remains when the internal volume of the sealed container 1511 is small is considered to be due to the corner of the closed container i5u or the rotating body 5 and the closed container i5U. The dead space that is not sufficiently conveyed by the mechanical stress is relatively large. Therefore, when the internal volume of the closed container 1511 is increased, the idle space can be relatively reduced, so that the mechanical stress is sufficiently transmitted to the ball. The particles 2 enhance the deformation and the fusion property of the spherical magnetic particles 30 323724 201230083, and as a result, the residual of the spherical magnetic particles 152 is reduced, and the spherical magnetic particles 152 are substantially absent. Thus, the spherical magnetic particles 152 are substantially The volume ' of the closed container 1511 which does not remain on is preferably il or more, and more preferably 5 l or more. As described above, the spherical magnetic particles are deformed and fused by the mechanical stress applied by the uniaxial rotating body 155, and become the flat magnetic particles 0. Then, the flat magnetic particles are separated from the dispersion medium and the solvent. Further, an appropriate liquid drying step can be carried out by considering the compatibility of the solvent used in the production of the flat magnetic particles with the insulating material to be mixed later. Specifically, when the solvent used for producing the flat magnetic particles is inferior in compatibility with the insulating material, it is preferred to carry out a drying treatment so that the solvent is 4% by mass or less, preferably 2% by mass or less. It is especially good for i mass% or less. On the other hand, when the compatibility between the solvent used for the production of the flat magnetic particles and the insulating material is good, the slurry drying step may be carried out without dispersing the flat magnetic particles in the solvent. Move to step 2. The drying method is not particularly limited as long as the solvent is removed from the slurry after the production of the flat magnetic particles, and examples thereof include heat drying, vacuum drying, and cold beam drying. From the viewpoint of drying efficiency, it is preferred. Dry for vacuum. Further, in order to improve the drying efficiency, a certain degree of solvent can be removed by a method such as solid-liquid separation before the drying step. The solid-liquid separation method may be a filtration operation such as a filter press or a suction filtration, 323724 31 201230083 or a general method such as a centrifugal separation operation by a decanter or a centrifugal separator. &lt;Second Step&gt; The flat magnetic particles are dispersed and mixed in a solution in which an insulating material is dissolved in a solvent to form a molding material. Here, the insulating material can be completely the same as the insulating material described above, and thus the description thereof will be omitted. Further, the solvent is not particularly limited as long as it can dissolve the insulating material, and for example, an alcohol such as decyl alcohol, ethanol, 2-propanol, butanol or octanol, ethyl acetate or butyl acetate can be suitably used. Ethyl lactate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, 7-butyrolactone and other esters, diethyl hydrazine, ethylene glycol monoterpene _1 (曱基赛路苏(11161:1) ^1〇611〇3〇1乂6)), ethylene glycol monoethyl ether (ethyl celecoxib), ethylene glycol monobutyl ether (butyl seduce), diethylene glycol monomethyl ether, diethyl Ethers such as diol monoethyl ether, ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone, acetamidine acetone, cyclohexanone, aromatic hydrocarbons such as benzene, toluene, diphenylbenzene, and ethylbenzene; A guanamine such as guanamine, N,N-dimercaptoacetamide or N-decylpyrrolidone, and these solvents may be used alone or in combination of two or more. The dispersion mixing method is not particularly limited, and a stirring device such as a planetary mill, a sand mill, or a ball mill is preferably used. The mixing conditions can be suitably adjusted without agglomerating the flat magnetic particles. &lt;Third Step&gt; The above-mentioned molding material is molded or applied onto a substrate to prepare a molded body, and 32 323 724 201230083 is obtained by drying and curing the resultant. The molding method is suitable for a generally known molding method such as a die-casting blade coating method, an injection molding method, or the like. By using the film. The shape of the sheet is in the form of a sheet or a film having an arbitrary shape. When the layer is formed into a dry form, it is preferably formed into a shape of a crucible or a film by a doctor blade method. Concentrated material, when viscosity adjustment is required, volatilize the solvent and advance in drying. = If necessary, after the forming material is applied to the substrate, the sheet or film is flat, and the magnetic field is oriented to cause the flat magnetic particles to Orientation processing oriented with the direction of the thin. The heat may be carried out in a gas or in a vacuum, and the composite magnetic body of the present embodiment may be used. The plastic magnetic particles can be kneaded with a thermosetting resin or a hot crucible, mixed and dispersed, and formed into a composite body. Thus, a composite body of the actual state can be obtained. The kneading method may be carried out by heating and kneading by a generally known method such as a pressure kneader, a biaxial kneader, a blast mill or the like to obtain a kneaded product. In the method for molding the kneaded product, a molded body can be produced by a generally known method such as hot press molding, extrusion molding, injection molding or the like. In these methods, in order to orient the flat magnetic particles in the resin, it is preferably a heat-molded molding which is stretched into a flat shape. In order to adjust the viscosity at the time of stretching, it is preferred to add a plasticizer or to perform surface treatment of the flat magnetic particles. If necessary, it is preferred to carry out the orientation treatment of the orientation of the flat magnetic particles by the orientation of the magnetic field while heating and maintaining the fluidity in 323724 33 201230083. [Second composite magnetic material] The composite magnetic material of the present embodiment is a composite magnetic body in which the flat magnetic particles are dispersed in an insulating material, and the composite magnetic material has a porosity of 20% or less. Here, the porosity of the composite magnetic body can be obtained by the following formula (4). Porosity = (1 - measured density / theoretical density) χ 100 · · (4) The theoretical density of the composite magnetic material is based on the theoretical density of the flat magnetic particles and the theoretical density (and measured density) of the insulating material. The ratio of the mixture of the flat magnetic particles and the insulating material was calculated. Further, a method of calculating the theoretical density of the flat magnetic particles is a method of calculating a lattice constant from an X-ray diffraction pattern of the flat magnetic particles, and calculating a theoretical density value based on the lattice constant and the crystal structure. . On the other hand, a method of calculating the measured density of the insulating material, for example, when the insulating material is a resin, is a method of calculating the measured density from the measured values by merely curing the resin and measuring the outer dimensions and mass. Further, a method of calculating the measured density of the composite magnetic material, for example, a method of measuring the outer shape and the mass, and calculating the measured density from the measured values, or a method using the value measured by the pycnometer method. Preferably, the composite magnetic body has a real partial permeability #r' of 7 or more in a frequency band of 70 MHz to 500 MHz, and a real part er' 34 323724 201230083 of a complex dielectric constant of 15 or more, and (in r, · ε r,)-&quot;2 is 〇. i is below, (# γ £〆) 1/2 is 0.5 or more and 1 or less. In the composite magnetic body, by setting the real part of the complex magnetic permeability and the real part er of the complex permittivity to the above range, the electronic component or the electronic device including the composite magnetic body of the embodiment can be made small. It can suppress the power loss caused by impedance matching. Hereinafter, the composite magnetic body is attached to the antenna as an example, and the real part #r of the complex magnetic permeability described above and the real part ε r' of the complex permittivity are described in detail in the composite magnetic body. ( yr, · ε r,) - 1/2 and (the reason that r, / stone ",) 1/2 is set in the above range is preferable. Furthermore, the same effect can be obtained in all electronic components other than the above-mentioned antennas using high frequencies. First, it is preferable that the real//r of the complex magnetic permeability in the frequency band of 70 MHz to 500 MHz is 7 or more', and particularly preferably 9 or more. Here, the reason why #r is set to 7 or more is that the real part of the complex permittivity generally exhibits a large value of 15 or more, and when π is less than 7, the order is compared with "," The value of 丨 causes an increase in power loss due to inconsistency in characteristic impedance. The upper limit of the vr' is not particularly limited, and the aspect ratio or content of the flat magnetic particles that can be actually produced can be obtained. In view of the ratio, etc., it is preferably 15 or less. The real part of the complex dielectric constant is preferably 15 or more, and more preferably 2 or more. Here, the reason why ε r' is 15 or more is used. According to the above formula, the effective value of miniaturization of the antenna is achieved. 323724 35 201230083 When the values of /zr' and ε r' are set in the above range in the composite magnetic body, (/zr'. ε r ') - 1/2 is more preferably 0.1 or less. The reason is as follows. The value of (# r' . ε r')_1/2, as shown in the formula (1), is in the composite magnetic body. The rate of shortening of the high-frequency wavelength with respect to the wavelength of the vacuum. Furthermore, the wavelength in the vacuum and the wavelength in the general atmosphere are shown. Almost equal values. In general, an antenna is usually composed of an antenna conductor formed by a wire having a length of 1/2 or 1/4 of a wavelength, etc. In a long wavelength region with a low frequency, especially at a frequency of 70 MHz to 500 MHz. In the wavelength band, the wavelength is 60 cm or more, and when the length of the antenna conductor is 30 cm or more or 15 cm or more, the antenna itself becomes large. Therefore, the matching circuit is used to match the long-wavelength signal with the electronic circuit for reception and transmission, but when the antenna length is shortened When the amount of current on the antenna conductor is lowered, the frequency band in which the antenna can receive and transmit is narrowed, or the emission efficiency of the antenna is lowered. In particular, when the length of the antenna is set to be 1/10 or less of the wavelength, it is difficult to perform. The reception and transmission of radio waves have practical problems. Therefore, if a composite magnetic body (μι·'. ε r' V&quot;2 is 0.1 or less is mounted on the antenna, the high-frequency wavelength is theoretically almost the same on the composite magnetic body. Shortened to less than 1/10. Therefore, there is no narrowing of the frequency band that the antenna can receive and transmit when the matching circuit is used or the emission efficiency of the antenna is lowered. It is low, and the size of the antenna can be reduced. The above (/zr'/ er') 1/2 is preferably 0.5 or more and 1 or less. The reason is as follows. (/^1''/£1*') The value of 1/2, as shown in the above formula (2), is the ratio of the characteristic impedance of the composite magnetic 36 323724 201230083 to the characteristic impedance Zfl of the vacuum (Zg/Zq), so the characteristic impedance Zs of the composite magnetic body is The characteristic impedance of the vacuum is er, 1/2 times. Usually, the composite magnetic body ///* is smaller than £1·, so the characteristic impedance of the composite magnetic body Zg is larger than the characteristic impedance Ζα (with vacuum) The characteristic impedance Ζ〇) has a smaller value. Further, when a high-frequency signal is known to propagate from a region having a large characteristic resistance to a small region, reflection or absorption occurs and is attenuated. Therefore, when the characteristic impedance Za of the composite magnetic body is larger than 50% of the characteristic impedance Za of the gas, the high frequency attenuation rate is extremely large, and practical problems occur. Therefore, when the value of (//1^'/£]:')^ is set to 〇.5 or more, when the electromagnetic wave propagates from the atmosphere to the composite magnetic body, the change in the characteristic impedance can be suppressed to within 50%. Therefore, the attenuation of the high frequency signal can be suppressed. Further, when the characteristic impedance Za of the composite magnetic material having a large characteristic impedance Zg is larger, even if the characteristic impedance difference is extremely small, the electromagnetic wave is largely attenuated. Therefore, the value of ("corporate / e r') 1/2 is preferably 1 or less. The loss tangent of the complex magnetic permeability of the composite magnetic body is preferably at most 05 or less than 〇〇4. Further, the composite The loss of the dielectric constant of the magnetic body tangent tanA , ^ knife tan &lt; 5 e (hereinafter sometimes abbreviated as tan (5 ε ) 乂 乂 preferably Ο.1 or less, especially preferably 0.07 or less. So w tan5 // and When the value of tan5 £ exceeds the preferred value, respectively, in the magnetic body, only the high frequency corresponds to the imaginary part of the complex magnetic permeability #, = the part of the imaginary part of the reading constant is absorbed and converted into heat removal. In addition to the energy attenuation of the frequency signal, there is also a doubt that the s/n ratio is lowered or the heat of the 323724 37 201230083 is lowered, so it is not worthwhile. Currently, in the frequency band of 70 MHz to 500 MHz, the wavelength of the electromagnetic wave is long. It is difficult to achieve miniaturization of the antenna. Therefore, in applications where special requirements such as mobile phones, portable information terminals, and multi-functional portable information devices are required to be miniaturized, the whip antenna must be stretched to several times the length of the frame to be used. Or you have to use the headphone cable as an antenna. On the other hand, this In the composite magnetic body of the embodiment, if the real part yr of the complex magnetic permeability in the frequency band of 70 MHz to 500 MHz satisfies the above range, the frequency is from 70 MHz to 500 MHz, preferably from 9 〇 MHz to 220 MHz. In the antennas of electronic components or electronic devices used in the band, such as mobile phones, portable information terminals, and multi-functional portable information devices, miniaturization and power loss can be achieved at the same time. In the frequency band up to 500 MHz, tan (5 // and tan (5 ε is lower than the frequency band exceeding 5 〇〇 MHz, so the gain of the antenna is improved, which is preferable. In the composite magnetic body of the present embodiment) By dispersing the above-mentioned flat magnetic particles in an insulating material, the porosity of the obtained composite magnetic material is 20% or less, and although the composite magnetic material is increased by r, it is hardly changed. The antenna of the electronic component or the electronic device using the composite magnetic body, such as a mobile phone, a portable information terminal, and a multi-functional portable information device, can be miniaturized. The power loss caused by impedance matching can be suppressed. The mechanism for obtaining such an effect can be considered as follows. 323724 38 201230083 When the amount of magnetic particles in the pore volume of the composite magnetic body becomes smaller, the mother of the af body is grayish, so that r' On the other hand, it is immersed on the surface; the edge material is the same 'has an electrostatic capacitance with the flat magnetic particles', so even if the porosity is increased, ... in addition, when the composite magnetic body is ^ When the oxygen porosity is reduced, the magnetic particles of the mother's early volume of the composite magnetic body are multiplied to make #r' larger. On the other hand, as mentioned above, ε r

The value is almost the same value. The hand is not affected by the porosity, so K is also 'by reducing the porosity in the composite magnetic body, although the value of &quot;r, becomes larger, but the value of ε r does not pay dim blue hei ^ u ^, Therefore, the difference between the value of Mr and the value of ε r is reduced. Therefore, the porosity of the composite magnetic body obtained by dispersing the flat magnetic material having an average length of 1 ^1 (long diameter/thickness) of 5 or more in the insulating material can be made 2" _ The composite Hao-like electronic parts or electronic devices have been miniaturized, and the power loss caused by impedance matching can be suppressed. Further, the method of reducing the porosity of the composite magnetic material is not particularly limited as long as it can reduce the porosity of the composite magnetic body to 20% or less. For example, a method of preventing the dispersibility of the flat magnetic particles against the insulating material to prevent the flat magnetic particles from aggregating with each other, and improving the hardenability of the insulating material by optimizing the type and amount of the curing agent 'Selecting a highly fluid insulating material to allow the insulating material to easily enter the gap between the flat magnetic particles and the flat magnetic particles, and pressurizing the obtained composite magnetic body to reduce internal pores 323724 39 201230083 Method, etc., in addition, the material of the material of the first composite magnetic body, that is, the insulation described in the item of the first composite magnetic body, that is, the insulating material. When the composite magnetic permeability of the present embodiment is low, the shape processability is good. These two = high mechanical strength, suction plate insulation material, for example, can be appropriately made = polyimide resin, polybenzo resin, poly-stretch, polybenzocyclobutene resin, poly-arylene-lipid, poly stone Oxygen-burning tree, such as oxygen-producing resin, vinegar resin, fluororesin, poly-smoke tree smear, vinegar resin, poly- benzene fine resin, (4) maternity resin, styrene resin, etc. Or heat: ABS resin, poly, only use i alone or in combination with two kinds of resins. Among these resins, a resin having a cyclic structure in a main chain and having a functional group is preferable because it is difficult to cope with the flatness of the plate-like magnetic particles which are polymerized. Such a resin can be exemplified by the fact that the two rings are easily transported to the quotient: using a harder wall such as a dicyclopentadiene type wall:: :: a porosity of a low composite magnetic body, which is harder to reduce Insulating or flexible insulating tree is intended to be: 'mixable insulating resin, epoxy resin or bisphenol epoxy resin in the above-mentioned resin towel. 'Specially good liquid When the dicyclopentadiene type resin is used in combination with the above liquid phenol type epoxy resin, it is preferably a gluten or a bis- pentylene type resin phase 323724 40 201230083 The content ratio is set to 5 G f % by volume or more (10) by mass or less. By setting the content of the dicyclopentadiene type resin in the above range, the orientation of the flat magnetic particles can be improved, and a high yield can be obtained. In addition, since the insulating resin which imparts stretchability or flexibility is contained in an amount of 10% by mass or more and 50% by mass or less, the resin easily enters the gap between the flat magnetic particles, and the generation of pores of the composite magnetic body can be suppressed. It is preferable because the porosity can be lowered. [Method for Producing Second Composite Magnetic Body] Next, a method for producing the composite magnetic body of the present embodiment will be described. In the method for producing a composite magnetic body, the step of forming the molding material by forming the flat magnetic i1 green particles into a insulating material and mixing the molding material into a predetermined shape is provided. And the resulting filament/hard wire/hardening step. &lt;Step of Producing Molding Material&gt; This step is to produce a molding material in which flat magnetic particles are dispersed in an insulating material by combining the above-mentioned flat magnetic particles, an insulating material, a solvent J, and a curing agent necessary for the coating. step. Since the % edge material has been described above, the description is omitted. When a thermosetting resin is used as the insulating material in the field, the type and amount of the curing agent can be appropriately adjusted depending on the type and amount of the thermosetting resin to be used. When an epoxy resin is used as the thermosetting resin, it is preferably three-stage from the viewpoint of promoting condensation reaction between the epoxy earth and preventing generation of pores due to poor curing of the composite body of the composite magnetic body. amine. 41 323724 201230083 The tertiary amine may, for example, be 1-isobutyl-2-mercaptoimidazole, 1-benzyl-2-mercaptoimidazole, cyanoethyl-2-mercaptoimidazole or cyanoethyl 2-Ethyl-4-mercaptoimidazole and the like. The amount of the curing agent to be added is adjusted to promote the condensation reaction of the functional group, and may be added in an amount of 0.5% by mass or more and 3% by mass or less based on the total mass of the thermosetting resin and the curing agent. The solvent is not particularly limited as long as it can dissolve the insulating material. For example, ketones such as acetone, methyl ethyl ketone, decyl isobutyl ketone, acetamidine acetone, and cyclohexanone, benzene, toluene, and the like can be suitably used. Aromatic hydrocarbons such as xylene and ethylbenzene, diethyl ether, ethylene glycol monoterpene ether (methicone), ethylene glycol monoethyl ether (ethyl stilbene), ethylene glycol monobutyl ether (butyl Ethers such as sulphide), diethylene glycol monoterpene ether, diethylene glycol monoethyl ether, propylene glycol monoterpene ether, dimethyl decylamine, N,N-dimercaptoacetamide, N-fluorenyl Amidoxime such as pyrrolidone. These solvents may be used alone or in combination of two or more. In particular, a solvent having a high boiling point such as cyclohexanone or diphenylbenzene can suppress the increase in viscosity of the molding material due to the evaporation of the solvent, which is preferable. The solvent is preferably 30% by mass or more, and more preferably 35% by mass or more in the mixed molding material. By mixing 30% by mass or more of the solvent, the viscosity of the obtained molding material is lowered, and even when the flat magnetic particles are agglomerated during mixing, the aggregation is eliminated and the dispersibility in the insulating material is improved. Thereby, the porosity of the composite magnetic body can be lowered. Further, when the amount of the solvent is too large, it takes time to dry as described later, and there is a concern that pores are formed during drying. Therefore, the amount of the solvent is preferably 50% by mass to 42 323724 201230083. The content of the flat magnetic particles in the molding material is preferably 10% by volume or more and 60% by volume or less, and particularly preferably 3% by volume based on the total amount of the insulating material and the curing agent and the flat magnetic particles. The above is less than the volume %. When the content of the tabular magnetic particles is less than 1% by volume, the amount of the flat magnetic particles is too small, and the magnetic properties of the composite WE body are lowered, which is not preferable. On the other hand, when the content of the tabular magnetic particles exceeds 60% by volume, the tabular magnetic particles are excessively large, and the flat magnetic particles, the insulating material, and the curing agent are reduced in fluidity. When the forming material is formed into a shape: it is not preferable. _ and a molding material obtained by mixing these flat magnetic particles, an insulating material, and a solvent with a hardening agent necessary for the solvent. The mixing device is not particularly limited as long as it can uniformly form and disperse the flat magnetic particles, the insulating material, the curing agent, and the solvent to form a molding material, and examples thereof include a (four) machine and a self-rotating type. Mixer, homogenizer, ultrasonic homogenizer, Lin machine, etc. When mixing is carried out in such a manner, mx does not excessively agglomerate the tabular particles, and is uniformly dispersed in the insulating material to adjust the mixing conditions appropriately. &lt;Molding step&gt; This is a step of forming the molding material obtained in the above-mentioned step towel into a sheet shape, a film shape or a bulk shape having a predetermined shape. 43 323724 201230083 The molding method is not particularly limited as long as it can shape the molding material into a constant shape and maintain the shape after molding. Further, the shape or size of the molded body is not particularly limited, and for example, it may be formed into a sheet shape or a film shape, or may be formed into a shape having a thickness such as a rectangular parallelepiped shape, for example, a block shape. When it is formed into a sheet shape or a film shape, it can be easily obtained by applying the above-mentioned molding material to a sheet-like or film-like substrate. This method is preferred because of its good mass productivity. Examples of the method of forming into a sheet shape or a film form include a doctor blade coating method, a bar coating method, a die coating method, a molding method, and the like. Further, when it is formed into a shape having a thickness such as a thin plate shape, for example, a method of allowing a molding material to flow into a mold of an arbitrary shape or the like. Further, when the composite magnetic body is laminated to form a laminated structure, it is preferable to form a composite magnetic body formed into a sheet shape or a film shape by a doctor blade method. &lt;Orientation Step&gt; This is a step of aligning the flat magnetic particles having an average aspect ratio (long diameter/thickness) of 5 or more in the molded body obtained in the above-described molding step in one direction. The shaped body obtained in the above forming step does not need to perform this orientation step when it has a desired #r', but in order to obtain a composite magnetic body having a higher f/r', it is preferred to carry out the obtained shaped body. A direction in which a magnetic field is applied to orient the flat magnetic particles in the shaped body in one direction. The method of orienting the flat magnetic particles in the formed body is as long as the flat magnetic particles of 44 323724 201230083 can be oriented in one direction, that is, when the magnetic field is applied to the particles =====, when the magnetic field is applied to: = In the molded body, When the magnetic field reaches = two = two:: :::: The flat magnetic particles in the form are fully unidirectionally plated, and due to the fine field, there will be a flat h, a mutual condensation and separation from the insulating material; The H=l group is called the step of aligning the flat magnetic particles in the above-mentioned orientation step = read-cut (four)/hardening, and (iv) the step of merging the Wei body. After drying, the formed body oriented by the slab-shaped magnetic particles is subjected to dry drying/hardening, and (iv) material hardening. Weitian 4, cattle (treatment &amp; degree, treatment time, etc.) can be appropriately adjusted depending on the type of material or solvent. The porosity of the formed body obtained in the drying step is 20% or more desirably = molding step, and when the porosity of the formed body exceeds 20%, the body is subjected to the drying step. The step of molding. The molding device can be suitably used as described in 323724 45 201230083. When pressure is applied to the molded body by press-fitting, when resin is used as the insulating material, in order to effectively reduce the pores, it is preferred to apply pressure above the softening temperature of the resin and below the hardening start temperature. The pressure at the time of molding can be appropriately adjusted, and it is preferred to apply a pressure of about 5 MPa to 20 MPa. The composite magnetic body of the present embodiment can be obtained by the above method. [3rd composite magnetic material] The composite magnetic material of the present embodiment is characterized in that the insulating material contains a first resin having a cyclic structure and having a functional group polymerized in a monomer unit. Composite magnetic body. &lt;First resin&gt; The first resin is a resin having a cyclic structure and having a functional group polymerized in a monomer unit as a main chain. The resin is not particularly limited as long as it is a resin which can obtain a molding material having a low viscosity and fluidity when it is mixed with the flat magnetic particles, and a thermosetting resin, a thermoplastic resin, or an ultraviolet curable resin can be used. Examples of the resin include an epoxy resin, a silica resin, a phenol resin, a polyimide resin, a polybenzoxazole resin, a polyphenylene resin, and a polybenzocyclobutene resin. , poly-arylene ether resin, polycyclohexene resin, polyester resin, fluororesin, polyolefin resin, polycycloolefin resin, cyanate resin, polyphenylene ether resin, polystyrene resin, acrylic resin, A methacrylic resin, a urethane resin, a urethane, a propylene propylene tree, an oxy-acrylic resin, and the like. This filial resin can be used alone or in combination of two or more types of 1 46 323 724 201230083. Among these, from the viewpoint of solubility in a large amount of solvent and easy adjustment of viscosity, a thermosetting resin is preferable, and among the thermosetting resins, an epoxy resin or a polycycloolefin resin is preferable. Here, the main chain has a resin having a cyclic structure, and when an epoxy resin is used as an example, a dicyclopentadiene type epoxy resin having a cyclic structure of a main chain (formula (1)) or Naphthalene type epoxy resin (formula (2)).

In the formula (2), h is hydrogen or a fluorenyl group. In addition, the resin having a linear structure in the main chain, and a resin having a short linear structure of C = 1 to 3 in the linear chain of the aldehyde type epoxy resin is exemplified (formula (3)). In the formula (3), X is a linear structure having a short-length base chain of C = 1 to 3, preferably a linear structure of C = 1. 47 323724 201230083

In the formula (3), X is an alkyl chain of ΟΙ to 3, and R2 is any one of hydrogen and an alkyl group or an aryl group having a molecular weight of from 15 to 180. Examples of the X include a mercapto group, an ethyl group, a propyl group, an isopropyl group, a butyl group, an isobutyl group, a tertiary butyl group, a phenyl group, a benzyl group, a tolyl group, and the like. Further, as the resin having a linear structure in the main chain, a resin having a short linear structure of 〇1 to 3 in the linear chain of the dicyclopentadiene type epoxy resin (formula (4)) can also be used. In the formula (4), X is a linear structure having an alkyl chain of ΟΙ to 3. The X is the same as the formula (3), and examples thereof include a mercapto group, an ethyl group, a propyl group, an isopropyl group, a butyl group, an isobutyl group, a tertiary butyl group, a phenyl group, a benzyl group, and a fluorenylphenyl group.

Even if the resin of the above structure is a resin which is hard to be wound around the flat magnetic particles, when the polymer chain is long, the real part #r' of the complex magnetic permeability of the composite magnetic body may become small. Therefore, η of the above formula (1), formula (3), and formula (4) is preferably 0 to 3, more preferably n=0. 48 323724 201230083 That is, it is preferred to use a monomer alone or a combination of a monomer and an oligomer as appropriate. The content of the flat magnetic particles in the total amount of the composite magnetic material is preferably 10% by mass or more and 60% by mass or less, and more preferably 30% by mass or more and 50% by mass or less. When the content of the tabular magnetic particles is less than 10% by mass, the ratio of the tabular magnetic particles is too small, and the obtained composite magnetic material is too low from r', and as a result, the desired /zr' cannot be ensured. The doubts are not good. On the other hand, when the content of the tabular magnetic particles is more than 60% by mass, the ratio of the tabular magnetic particles is too large, and the amount of the resin is relatively small. When the flat magnetic particles and the resin are mixed, the ratio cannot be obtained. The molding material having low viscosity and fluidity is insufficient in the orientation of the flat magnetic particles in the subsequent step, which is not preferable. The angle between the orientation direction of the flat magnetic particles in the composite magnetic body and the long axis direction of the flat magnetic particles is preferably 20 or less, more preferably 0 or more and 15 or less, and more preferably 0° or more and 10° or less. By inclining the long-axis direction of the flat magnetic particles with respect to the orientation direction of the flat magnetic particles in the above range, a composite magnetic body having a higher /zr' can be obtained. The term "orientation direction" as used herein refers to a direction in which the long axis of the flat magnetic particles is oriented, that is, when the cross section of the composite magnetic body is observed, and the longitudinal direction of the plurality of flat magnetic particles is formed. The standard deviation of the angle is the smallest direction. The //r' of the composite magnetic body is preferably 7 or more, more preferably 1 or more, in the frequency wave of 49 MHz to 500 MHz in the period of 49 323 724 201230083. Here, the reason for setting it to 7 or more is that the larger the inspection rate is, the further the miniaturization of the composite magnetic body or the circuit board is achieved. [Method for Producing Third Composite Magnetic Body] The method for producing a body and the body is a method in which the main composite has a cyclic structure and is polymerized in a monomer unit in the second step of the first composite magnetic body. The i-th resin of the functional group is formed as a molding material as an insulating material, and the other is the same as the first compound magnetic element. Here, in order to obtain a higher composite magnetic body from r, the first one is obtained. In the third step (4) of the production of the magnetic body, after the "forming" step, a step of applying a magnetic field to the obtained shaped body to orient the flat magnetic particles in the filament in a unidirectional direction is performed. The aforementioned drying/hardening step.仃 Next, a method of manufacturing the third composite magnetic body will be described in detail. &lt;Production Step of Molding Material&gt; First, a mixed resin having a cyclic structure and having a functional group polymerized in a monomer unit, a flat magnetic particle, a solvent, and a curing agent required thereto are prepared. Forming material. μ The resin having a cyclic structure and having a functional group polymerized in a monomer unit, as long as it is mixed with a flat magnetic (tetra) substrate to obtain a low-viscosity and fluid-forming molding material, In particular, it is possible to use a heat-curing job, a heat-curable (10), a wire hardening tree 323724 50 201230083, a grease, and the like, and examples thereof include an epoxy tree gambling, a polyglycol, and an indomethacin. Resin, polybenzoxazole resin, polyphenylene resin, polybenzocyclobutene resin, polyarylene-lipid, polycyclohexyl ester, polylysate, fluororesin, poly-saturated resin, polycyclic ring Hydrocarbon resin, cyanate vinegar resin, polyphenylene resin, polystyrene resin, propylene, methacrylic resin, amino carboxylic acid _ lipid, amino acid f acid, acrylic acid resin, epoxy _Acrylic resin, etc. These resins may be used alone or in combination of two or more kinds, and have solubility in many solvents and are easy to adjust. From the viewpoint, it is preferably a thermosetting resin or a thermosetting resin. It is preferably an epoxy resin or a polycycloolefin resin. The epoxy resin having a cyclic structure in the main chain is a naphthalene type epoxy resin represented by the above formula (2). In addition, the main chain has a linear structure, and the cyclic formula (3) indicates that it has C=1 5 q^* rouge, and it can be exemplified by a grease, and a cresol novolac type. Epoxy-arc-type locus _ having a short-chain bicyclic quinone dimer of &amp; 1 to 3 // to 3, more causes: two of the above formula (1), formula (3), formula (4)... The resin of the above:: upper! is not easily entangled in the flat magnetic particle r, and becomes small. The long-term 'sometimes makes the composite magnetic =0, that is, it is preferably used as a sputum (4) or 4# contact monomer and a low 323724 51 201230083 polymer. The type and amount of the hardener can be appropriately adjusted depending on the resin to be used. When an epoxy resin is used as the above-mentioned resin, the condensation reaction of the ring is promoted, and the molded body of the composite fungus is promoted. From the viewpoint of the above, a tertiary amine is preferred. Examples of the strength of the turmeric strength 9 tertiary amines include, for example, isobutyl-2-methyl surface, phenethyl-2-mercaptoimidazole, i-cyanoethyl, 2_ &amp; ethyl-4-anthracene Imidazole and the like. The addition amount of the earth's ~-mercaptoethyl-2-hardener is considered to promote the reaction of the functional group with respect to the resin and the hardening, and the mass % or less. The total mass of the agent is 〇.5 伽加上3 In addition, it reduces the steric obstacle and enhances the financial properties of the composite magnetic material. From the viewpoint of the hardening of the ring structure, the hardening agent having a nuclear structure is described. The type of hardener, the new one is proud of the phenolic phenolic phenolic resin (xylok) type agent. These hardeners are less hardened by the cyclodecadiene type, so it is preferred to be a ruthenium. The driving force for polymerizing the resin is the same as that of the tertiary amine or the like. : the granules are as long as they are soluble in the above-mentioned resin. For example, acetone, butyl hydrazine, methyl group, particularly limited to cyclohexanone, benzene, benzene, butyl ketone, and ethyl hydrazine may be suitably used. Aromatic test (ethyl celecoxib) alcohol monomethyl bond (methyl serotonin), ethylene glycol monoethyl sulphate, ethylene glycol monobutyl ether (butyl sulbac), diethyl ether, ethyl benzene, etc. Diethylene glycol 323724 52 201230083 Monoterpene ether, diethylene glycol monoethyl ether, propylene glycol monomethacrylate μ% wrinkle, methionamide, hydrazine, hydrazine-dimethylacetamide, hydrazine-methyl One such squirting sword can be used alone or in combination with two kinds, _, etc. It is a solvent having a high boiling point such as cyclohexanone or xylene, and is preferred because it suppresses the viscosity of the molding material due to the burst of the solvent. Zen, the ratio of the flat magnetic particles in the forming material, relative to

The volatile component in the molding material is hardened to become a solid ruthenium (resin + hardener + flat magnetic particle), preferably I * VAU * S3 Qc 1' t · 60 vol% or less, and particularly preferably 30 vol% Above 5〇% by volume. When the content of the tabular magnetic particles is less than that of the ruthenium, the flat magnetic particles are too small to exhibit magnetic properties as a composite magnetic material. On the other hand, when the content rate of the flat magnetic particles is excessive, the flat magnetic particles are excessively large, and the fluidity of the molding material containing the flat magnetic particles and the resin and the curing agent and the solvent is lowered. The formability is lowered, so it is not good. _ Because the flat magnetic particles, resin, hardener and solvent are mixed, the molding material is applied. At this time, the viscosity of the molding material can be adjusted by appropriately adjusting the addition of the solvent. The 垔 and the mixing device may be formed by uniformly mixing the flat magnetic particles, the resin, the curing agent, and the solvent to form a slurry-like molding material, and are particularly limited, and examples thereof include a pro-grinding machine. , self-rotating and revolving type homogenizer, ultrasonic homogenizer, mixer, etc. The viscosity of the forming material is preferably 0. IPa. S or more l〇6pa. The lower part is 〇. 3 pa · S or more i〇4pa · s or less. 323724 53 201230083 Here, when the viscosity is less than 1 Pa · S, the fluidity becomes too large to deteriorate the productivity of the drying step. On the other hand, when the viscosity exceeds 106 Pa. S, the viscosity is too high and difficult. When the orientation of the flat magnetic particles is performed, the orientation of the plate-like magnetic particles of the composite magnetic body is lowered, which is not preferable. In this manner, the content of the flat magnetic particles is 10% by volume or more and 60% by volume or less and the viscosity of the molding material is set to 〇1 Pa·s or more and 106 Pa·s or less. A composite magnetic body with a balanced mechanical strength. &lt;Forming&gt; The molding method is not particularly limited as long as it can maintain a constant shape when a magnetic field is applied to the molding material. Further, the shape of the molded body is not particularly limited, and may be, for example, formed into a sheet shape or a film shape, or formed into a rectangular parallelepiped shape, etc., and the shape is coated by the above-mentioned molding material and has good productivity. Those formed into a sheet shape or a film shape can be easily obtained by being attached to a substrate of a sheet or a film. When it is formed into a sheet shape or a film shape, for example, when the molding material is 10 or less, it is possible to use a doctor blade coating method, a bar coating method, and/or, when the viscosity of the molding material exceeds 10 Pa·s, the method, etc. This method: Further, when formed into a shape having a thickness, for example, a method of flowing a material into a mold of an arbitrary shape or the like. y In the state in which the molding material is formed into a sheet shape, a film shape, or a shape formed into a rectangular parallelepiped shape, the flat magnetic particles may be oriented in an irregular direction and insufficiently oriented. Therefore, a magnetic field is applied to the molded body formed into a sheet shape, a film shape, or a rectangular parallelepiped shape, and the flat magnetic particles of the formed napkin are oriented. &lt;Orientation&gt; The method of orienting the flat magnetic particles in the molded body is not particularly limited as long as the field is applied so that the flat magnetic particles in the molded body can be oriented in one direction. When the magnetic field lines are bent, the flat magnetic particles cannot be oriented in one direction. Therefore, the magnetic field must be applied in such a manner that the magnetic lines of force generated are substantially parallel with respect to the surface of the formed body. As such a directional method, there are four orientation methods listed below.

(1) Orientation Method A and FIG. 3 are schematic structural views showing an orientation device of the method A of the method for manufacturing the composite magnetic body of the present invention, by using the above-mentioned molding material (pattern) An example of a device for applying a magnetic field line H generated by a magnetic field to a coating film 2 coated on the upper surface of a sheet-like or film-like substrate 1 to orient the flat magnetic particles in the coating film 2 is omitted. The aligning device 11 is provided with a dispenser that forms the coating film 2 by applying the molding material (schematically) to the upper surface of the substrate 1 that travels in the direction of the arrow g in the drawing. Coating means 12; each of the two sides in the width direction of the coating film 2 is provided, and the flat magnetic body in the coating film 2 is made by applying a magnetic field line H generated by applying a magnetic field to the coating crucible 2 along the width direction. One of the particle orientation pairs of the magnets l3a, 13b; and a drying means 14 for drying the coating film 2 obtained by orienting the flat magnetic particles by magnetic 55 323724 201230083. The magnets 13a, 13b are arranged such that the opposing poles become mutually different poles. In the orienting device 11, since the magnetic field is generated from the N pole of the magnet 13a toward the S pole of the magnet 13b, the coating film 2 passing between the magnets 13a and 13b is generated in parallel with the N pole from the magnet 13a toward the magnet 13b. The magnetic field line in the direction of the S pole. By the magnetic force line 平板, the flat magnetic particles in the coating film 2 are oriented parallel to the magnetic lines of force. By the above manner, the flat magnetic particles in the coating film 2 can be oriented parallel to the magnetic lines of force. (2) Orientation method Β Fig. 4 is a schematic block diagram showing an orientation device for performing the orientation method in the method for producing a composite magnetic body of the present invention, which is different from the orientation device 11 of Fig. 3. The magnets 22a and 22b are disposed on the upper side and the lower side of the coating film 2 so that the opposing poles are equal to each other. In the orientation device 21, when a magnetic field is applied to the coating film 2 by the pair of magnets 22a and 22b, magnetic lines of force generated from one of the magnets 22a and magnetic lines of force generated from the other of the magnets 22b are applied to the coating film. Since the position of 2 is repelled, magnetic lines HI and H2 which apply a parallel magnetic field to the surface of the coating film 2 are generated. The plate-like magnetic particles in the coating film 2 are oriented parallel to the magnetic lines Η1 and H2 by the magnetic lines HI and H2. By the above manner, the flat magnetic particles in the coating film 2 can be oriented parallel to the magnetic lines HI and Η2. 56 323724 201230083

(3) Orientation Method C Fig. 5 is a schematic block diagram showing the orientation device of the method C of the method for manufacturing the composite magnetic body of the present invention, which is different from the orientation device 21 of Fig. 4. Each of the pair of magnets 32a and 32b, the magnets 33a and 33b, and the magnets 34a and 34b provided on the upper side and the lower side of the coating film 2 are formed so that the opposite poles become mutually the same pole. The method is such that, for example, the magnetic lines of the adjacent magnets are not mutually offset at intervals. For example, in the orientation device 21 shown in Fig. 4, since the magnetic lines H1 and H2 generated from the respective N poles of the magnets 22a and 22b return to the s pole, the magnetic lines of force are perpendicular to both ends in the horizontal direction of the magnets 22a and 22b. Magnetic field lines are also generated on the surface ' of the coating film 2 in a direction not parallel to the coating film 2, and as a result, the orientation of the flat magnetic particles may be lowered. On the other hand, in the orientation device 31 shown in Fig. 5, as shown in Fig. 6, the coating film 2 is coated with the flat magnetic particles 41' in the film 2 before passing between the pair of magnets 32a and 32b. Although the orientation direction is in an unordered state, the flat magnetic particles 41 in the coating film 2 are caused by the magnetic lines of force hi, H2 generated in parallel with the surface of the coating film 2 between the magnets 32a and 32b. The flat magnetic particles 41 oriented along the magnetic lines HI and H2 are formed. However, if only the first magnets 32a and 32b pass between the first magnets 32a and 32b, the orientation of the flat magnetic particles 41 may be insufficient. Therefore, the orientation of the flat magnetic particles 41 is corrected by the difference between the magnets 33a and 33b. After passing between the last magnets 34a, 34b, the flat magnet 323724 57 201230083

The orientation of the traits of the traits 41 is insufficient, so that it becomes a highly directional. So, by coating? When the magnetic field is applied a plurality of times by Z, the orientation of the flat magnetic particles 41 in the coating film 2 can be improved.

(4) Orientation Method D Fig. 7 is a schematic diagram of the orientation of the method of the method of manufacturing the composite magnetic body of the present invention, and the orientation device of the orientation device 51 and the fourth embodiment The difference of 21 is that the magnetic force lines m and H2 are parallel to the flat magnetic particles 4i in the coating film 2, and the drying means 52 for preparing the dried coating film 2 is provided. The drying hand &amp; 52' can be a drying blower having a degree to which the coating film 2 can be cured, and can be exemplified, for example, a warm air blowing nozzle connected to a warm air supply source. In the orienting device 51, when a magnetic field is applied to the coating film 2 by the pair of magnets 22a, 22b, a magnetic field line H2 which applies a parallel magnetic field to the surface of the coating M 2 is generated. The flat magnetic particles in the coating film 2 are oriented parallel to the magnetic lines Μ and H2 by the magnetic lines 耵 and H2. At this time, if the coating film 2 is prepared by the reduction section 52, the coating film 2 is cured to fix the orientation state of the flat magnetic particles oriented in parallel with the magnetic lines H1 and H2. By the above manner, the flat magnetic particles in the coating film 2 can be oriented parallel to the magnetic lines of force HI, H2. As described above, it is possible to carry out only one of the alignment methods A to D alone or two or more of them, whereby the orientation of the flat magnetic particles in the coating film 2 can be improved. 323724 58 201230083 When the coating film 2 is replaced with a molded body having a predetermined shape, the orientation of the flat magnetic particles in the molded body can be improved by appropriately applying one or more of the orientation methods A to D. Examples of the magnets 13a and 13b include magnetite, permanent magnet, and the like. The arrangement or the number of pairs of the magnets is not particularly limited, and can be appropriately adjusted in accordance with the shape of the coating film or the shaped body or the required magnetic properties. The magnitude of the applied magnetic field is preferably 100 gauss or more and 1000 gauss or less when the opposite poles face each other as in the orientation device shown in Fig. 3. When the magnitude of the magnetic field is less than 100 gauss, the magnetic field is too small and the flat magnetic particles in the shaped body may not be sufficiently oriented. On the other hand, when the value exceeds 1000 gauss, the magnetic field is excessively large, and there is a concern that the flat magnetic particles are separated from the resin, and as a result, the magnetic properties of the obtained composite magnetic body are uneven. Further, when the same poles are faced to each other as in the orientation apparatus shown in Fig. 4, since the separation of the flat magnetic particles and the resin is less likely to occur, it is preferably 100 gauss or more and 3,000 gauss or less. &lt;Drying/hardening&gt; The molded body obtained by orienting the flat magnetic particles is dried, and then the resin is cured by heating or ultraviolet irradiation. The drying/hardening conditions (treatment temperature, treatment time, etc.) can be appropriately adjusted depending on the type of the resin or solvent to be used. By the above method, the third composite magnetic body can be obtained. [4th composite magnetic body] The composite magnetic material of the present embodiment is the first composite magnetic material 59 323724 201230083. The insulating material contains a functional group having a main chain having a cyclic structure and polymerized in a monomer unit. The first resin further contains a composite magnetic material of a second resin that imparts flexibility to the first resin. The real part /zr of the complex magnetic permeability in the frequency band of 70 MHz to 500 MHz of the composite magnetic body is preferably 7 or more, and more preferably 1 or more. Here, the reason why the real part of the complex magnetic permeability of the composite magnetic body in the frequency band of 70 MHz to 500 MHz is 7 or more is that the larger the vr is, the larger the wavelength shortening rate is, and thus the achievable Further miniaturization of electronic components or circuit boards using the composite magnetic body is employed. The loss tangent of the complex magnetic permeability of the composite magnetic body is preferably &lt; 5 /z is preferably 0.05 or less, and more preferably 〇.〇4 or less. Here, 'when tan &lt;5 // exceeds 0.05', in the composite magnetic body, only the portion of the imaginary part β r" corresponding to the complex magnetic permeability of the high magnetic permeability is absorbed and converted into heat 'except for the high frequency signal. In addition to the energy attenuation, problems such as a decrease in the S/N ratio or heat generation may occur, which may cause a decrease in gain, which is not preferable. The second resin constituting the composite magnetic body of the present embodiment will be described in detail. A resin which imparts flexibility to a first resin having a cyclic structure and a functional group polymerized in a monomer unit. The second resin is formed by molding a first resin and a flat magnetic particle. In the case of a resin which can impart flexibility and stretchability to the obtained cured body, it is not particularly limited. Preferably, for example, an epoxy resin, a polyoxyxylene resin, a urethane resin, or a polyfluorene is used. A flexible resin such as an amine resin. 60 323724 201230083 In addition, a modified epoxy resin modified with an amino phthalate, polyethylene, ethylene propylene or the like may be used, or a ring may be used. Add propylene oxide to the ring The epoxy resin of the resin is added to the epoxy resin. The resin which is imparted with flexibility is preferably an epoxy resin, and particularly preferably a bisphenol such as bisphenol A type, bisphenol B type or bisphenol F type. Epoxy resin of the skeleton. Epoxy resin having a bisphenol A type skeleton, and examples thereof include isopropylidene bisphenol, isopropylidene bis(o-cresol), tetrabromo-p-A, and 1,3-double ( 4-hydroxycumylbenzene), 1,4-bis(4-hydroxycumylbenzene), etc. Epoxy resin having a bisphenol B-type skeleton, and 2,2-bis(hydroxyphenyl) Butane, etc. The epoxy resin having a bisphenol F-type skeleton may, for example, be an anthracenyl bisphenol or a fluorenylene bis (o-nonylphenol). An epoxy resin having at least one of a bisphenol A type skeleton and a bisphenol F type skeleton. Among them, an epoxy resin having a bisphenol A type skeleton is preferable from the viewpoint of stretchability and shear strength. Further, among the epoxy resins having a bisphenol skeleton, an epoxy resin having two or more epoxy groups and having an ether skeleton is preferably contained in one molecule. Examples of the structure of the epoxy group include diglycidyl ether, diglycidyl ester, diglycidylamine, etc. The ether skeleton is a compound containing at least one ether moiety 61 323724 The composition of the ether skeleton is not particularly limited. For example, the ether skeleton may be a calcined diol. The calcined diol has a carbon number of preferably 2 to 6, more preferably 2 to 5, More preferably, it is 2 to 4. The ether skeleton may be linear or branched, preferably an ether skeleton derived from ethylene glycol or propylene glycol. Further, it has a bisphenol A type skeleton and contains 2 molecules in one molecule. The structure which has an epoxy group and has an ether skeleton, for example, is a propylene glycol which introduces the ether skeleton which consists of propylene glycol to the bisphenol A type, and introduces a glycidyl ether in the terminal of the bisphenol A type skeleton. Addition of bisphenol A type structure (chemical formula (5)).

/CH 3 h2c&gt;ch-ch2-o^ch-ch2-o;

JH-CH,

V _ (5) In the chemical formula (5), the value of p + q is from 1 to 5, and the preferred value of the p + q is from 2 to 4, and more preferably from 2 to 3. In addition, as another example of the structure, an ether skeleton composed of ethylene glycol is substituted for the ether skeleton composed of propylene glycol and introduced into a bisphenol A type skeleton, and glycidyl ether is introduced into the double The ethylene glycol addition bisphenol A type structure represented by the chemical formula (6) at the end of the phenol A type skeleton. H2v c -co{ch2-ch2o)|&lt;^^-|-^^(och2-ch2)-o -c- c-ch2 (6) 62 323724 201230083 The value in the chemical formula (6) is 4 to 8 The value of η+πι is 1 to 10, and the value of n+m is preferably 4 to 8'. The better value is 6. Have a double-discriminate A torture plus ¥ w ^ L.

The mixing ratio of the first resin and the second resin is preferably 5% by mass or more and 3% by mass or less based on the total mass of the first resin and the second resin. When the second resin is mixed in the second resin in the above range, when the composite magnetic material is molded on the substrate, the stretchability and flexibility of the workable base material are excellent. It is preferred to the composite magnetic body. [Method for Producing Fourth Composite Magnetic Body] Next, a method for producing the fourth composite magnetic body will be described. In the second method of producing the third composite magnetic material, the first resin having a cyclic structure and having a functional group polymerized in a monomer unit is used as the insulating material in the second step of the third method of producing the third composite magnetic material. In addition, the second resin which is a resin which imparts flexibility to the first resin is formed to form a molding material, and other methods for producing the third composite magnetic body are completely the same. 323724 63 201230083 &lt;Production step of molding material&gt; In this step, the first resin having a cyclic structure and having a functional group polymerized in a monomer unit is mixed, and flexibility is imparted to the second resin. A step of preparing a molding material from the second resin, the flat magnetic particles, the solvent, and the curing agent required. The composition, shape, characteristics, production method, and the like of the first resin, the second resin, and the flat magnetic particles are described, and thus the description thereof is omitted. Further, the first resin and the second resin can be synthesized by a generally known method, and a commercially available product can also be used. In addition, the commercial product of the second resin is preferably the product name "Adeka Resin EP-4000" (manufactured by Adeka Co., Ltd. (p+q=2 in the above chemical formula (5)), and the product name "Rikaresin BPO-20E" (new Manufactured by Nippon Physicochemical Co., Ltd. (p+q=2 in the above chemical formula (5)), and the product name "Rikaresin BPO-60E" (manufactured by Nippon Chemical and Chemical Co., Ltd. (n+m=6 in the above chemical formula (6)) The type and amount of the curing agent when the first resin and the second resin are used can be appropriately adjusted depending on the type and amount of the resin to be used. When a resin is used as the resin, oxygen is promoted. From the viewpoint of the condensation reaction of each other and the mechanical strength of the molded body of the composite magnetic body, a tertiary amine is preferred. The tertiary amine may, for example, be 1-isobutyl-2-indenyl or oxime.节基-2-methylmi-sit, 1-cyanoethyl-2-indenyl sulphate, sulphate, sulphate, sulphate, etc. Considering the condensation reaction that promotes the functional group, 323724 64 201230083 The total mass of the resin and the hardener is 〇.5% by mass. In addition, in view of the fact that the flat-shaped hybrid body is used to enhance the entanglement of the composite body, it is preferable that the modifier is a hardening agent having a cyclic structure in the main chain. Examples of the hardening agent having a cyclic structure include a curing agent, a curing agent, a xylQk type curing agent, and a dicyclopentadiene type curing agent. The force is weaker than that of the tertiary amine, and is preferably added in an amount equivalent to that of the resin. The agent is the same as those listed in the third composite magnetic material. The content ratio of the magnetic particles is such that the volume VI of the first resin and the volume V2 of the second resin and the volume V3 of the curing agent and the flat magnetic particles are solidified when they are solidified with respect to the volatile component in the molding material. The sum of the volumes V4 (BV1+V2+V3+V4) is preferably 10% by volume or more and 60% by volume or less, and more preferably 30% by volume or more and 50% by volume or less. Here, the content of the flat magnetic particles is When the volume is less than 1% by volume, the amount of flat magnetic particles is too small, so that it is compounded. When the magnetic properties of the magnetic material are lowered, the content of the flat magnetic particles is more than 60% by volume. When the content of the flat magnetic particles is too large, the flat magnetic particles are excessively contained, and the flat magnetic particles and the resin are hardened. Since the fluidity of the molding material of the solvent and the solvent is lowered, when the molded body is formed by the molding material, the orientation of the flat magnetic particles is less likely to occur, and as a result, the composite magnetic body is flat 65 323724 201230083 plate-shaped magnetic body It is not preferable that the orientation of the particles is lowered. The flat magnetic particles, the first resin, the second resin, the curing agent, and the solvent are mixed to form a molding material. At this time, the viscosity of the molding material can be adjusted by appropriately adjusting the amount of addition of the solvent. The mixing device is the same as those listed in the above first composite magnetic body. The viscosity of the obtained molding material is preferably 0. IPa · S or more and 106 Pa · S or less, and more preferably 0.3 Pa · S or more and 104 Pa · S or less. Here, when the viscosity is less than 0. IPa · S, the fluidity becomes too large to deteriorate the productivity of the drying step, which is not preferable. On the other hand, when the viscosity exceeds 106 Pa · S, the viscosity is too high and it is difficult. When the orientation of the flat magnetic particles is performed, the orientation of the flat magnetic particles in the composite magnetic material is lowered, which is not preferable. In this manner, the content of the flat magnetic particles in the molding material is 10% by volume or more and 60% by volume or less, and the viscosity of the molding material is set to 0. IPa · S or more and 106 Pa · S or less. A composite magnetic body in which the mechanical strength of the molded body is balanced with #r' is obtained. &lt;Forming Step&gt; This is a step of forming the molding material obtained in the above step into a predetermined shape. The molding method is not particularly limited as long as it can form a molding material into a constant shape and can maintain a constant shape when a magnetic field is applied after molding. Further, the shape or size of the molded body is not particularly limited. For example, it may be in the form of a sheet or a film, or may be formed into a rectangular shape such as a rectangular shape, for example, in a block shape. When it is formed into a sheet shape or a film shape, it can be easily obtained by coating the above-mentioned molding material on a sheet-like or film-like substrate. This method is preferred because of its good mass productivity. When it is formed into a sheet shape or a film shape, for example, when the viscosity of the molding material is 10 Pa·s or less, a doctor blade coating method, a bar coating method, or the like can be used. Further, when the viscosity of the molding material exceeds 10 ÅPa · S, a die coating method or the like can be used. Further, when it is formed into a shape having a thickness, for example, a method of causing a molding material to flow into a mold of an arbitrary shape or the like is exemplified. In a state where only the molding material is formed into a sheet shape, a film shape, or a rectangular shape, the flat magnetic particles may be oriented in an irregular direction and may be insufficiently oriented. Therefore, a magnetic field is applied to the molded body formed into a sheet shape, a film shape, or a rectangular parallelepiped shape, and the flat magnetic particles in the molded body are oriented in one direction. &lt;Orientation Step&gt; The orientation step of the fourth composite magnetic body is the same as the orientation step described in the above third composite magnetic body. &lt;Drying/hardening step&gt; The step of drying/hardening the molded body obtained by orienting the flat magnetic particles by the above-described orientation step to form a composite magnetic body. This drying/hardening step is the same as the drying/hardening step of the above third composite magnetic body. 67 323724 201230083 &lt;Molding step&gt; When it is desired to further reduce the porosity of the formed body obtained in the above drying step, it is preferred to carry out a step of applying a wedge pressure to the formed body after the drying step. The molding device can be suitably used as generally known. When pressure is applied to the molded body by the press device, in order to effectively reduce the pores, it is preferred to apply a pressure above the softening temperature of the resin and below the hardening start temperature. The pressure at the time of molding can be appropriately adjusted, and it is preferred to apply a pressure of about 5 sen &amp; to about 20 MPa. The composite magnetic body of the present embodiment can be obtained by the above method. [Antenna] The antenna of the present embodiment includes any of the above-described composite magnetic bodies of the fourth to fourth. One form of the antenna is to mount the above composite magnetic body wire. The method of attaching the composite magnetic body to the antenna is not particularly limited, and the composite magnetic body is coated on a conductor such as a copper wire constituting an antenna (hereinafter referred to as an "antenna conductor"). "). The surface or shape of the antenna is not particularly limited, and a monopole antenna, a loop antenna, a helical antenna (helical her face), a patch antenna, an F-shaped antenna, an L-shaped antenna, or the like can be suitably used. Further, it is also possible to use the matching circuit in order to make the antenna smaller. For example, a monopole antenna or an L-shaped antenna is formed by processing the composite magnetic body into a rod shape or a long strip shape centering on the antenna conductor and holding the antenna 323724 68 201230083 conductor. Further, the 'stud antenna' can be obtained by winding a long and extremely thin antenna conductor made of a copper wire or the like around the rod-shaped composite magnetic body in which the composite magnetic body is processed into a rod shape. Among these antennas, a small antenna having a length shorter than 1/4 of a desired wavelength can be obtained by the wavelength shortening effect. Fig. 8 is a view showing a power supply method of a monopole antenna which is an example of an antenna according to the present embodiment, and the monopole antenna 61 includes a rod antenna conductor 62 and a surface covered by the antenna conductor 62. A plate-like composite magnetic body 63. The monopole antenna 61 is connected to a bottom plate 64 made of a conductor having a predetermined shape via a coaxial connector or the like, and is connected to the ground by a connection portion 65 having the coaxial connector or the like as an internal conductor. Signal transmitter 66. The power supply method of the antenna of other types and shapes is also the same as described above, and the antenna is connected to the bottom plate 64 via a connector or the like, and the AC signal transmitter 66 is connected by using the connection portion 65 as a power supply point. This becomes the connection of the power supply point. The 卩65 and the bottom plate are electrically insulated. [Communication device] The communication device of the present invention has the antenna described above. It is not particularly limited as long as it is a device for receiving and transmitting various kinds of information via electromagnetic waves, and receiving and transmitting it. For example, four personal computers, mobile phones, and (four) information can be cited. Multi-functional portable information terminal such as terminal and smart phone, PDA (Personal 69 323724 201230083

Communication equipment such as Digital Assistant; personal digital assistant, various electronic equipment such as audio equipment, video equipment, and video equipment. In addition to the various devices described above, the communication device of the present embodiment includes a communication device in which an auxiliary antenna such as a protective cover or the like which is provided in various devices such as the above-described antenna is mounted. In these communication devices, the antenna may be provided outside the communication device or may be incorporated in the communication device. Here, the use of a mobile phone as a communication device is taken as an example to illustrate various mounting methods of the antenna described above. FIG. 9 is a perspective view showing an example of a mobile phone according to the communication device of the present embodiment. The mobile phone 71 is provided with a liquid crystal display, an organic electroluminescence display or the like provided on the front surface of the casing 72. The display unit 73 of the display function is provided with a bottom plate (not shown) on the inner surface side of the display unit 73, and the antenna conductor 75 disposed in the rod-shaped monopole antenna 74 is connected to the bottom plate via a connector or the like. An electronic circuit (not shown) of the mobile phone 71 is connected to the connection portion. The antenna conductor 75 of the monopole antenna 74 is covered by a composite magnetic body 76. The monopole antenna 74 can be taken out from the housing 72 or housed in the housing. When communicating, it is necessary to pull the communication from the housing 72 as needed. When the communication is not performed, the monopole antenna 74 can be inserted into the housing 72 and accommodated. The pole antenna 74 is not required to be rod-shaped and is retractable. The monopole antenna 74 is considered to have a position where the boost antenna gain does not overlap with the display portion 73. Further, when the monopole day 1 (four) 323724 70 201230083 is placed When the position is overlapped with the display unit 73 or the like, it is preferable that the monopole antenna 74 and the display unit 73 are spaced apart from each other. Fig. 1 is a view showing another example of the action power of the communication device of the present embodiment. In the oblique view, the mobile phone 8 is provided with a display unit (10) having a display function constituted by a liquid crystal display or an organic electroluminescence display or the like, and a terminal for external antenna is provided on the side surface of the frame 82. 84. The connection terminal 置 placed on the side of the rod-shaped monopole antenna 85 is embedded in the external antenna terminal 84, and the antenna conductor 87 disposed in the monopole antenna is connected via the connection terminal 86 and the external antenna. Connected to the display portion 83 by the terminal 84 The bottom plate provided on the front side (omitted from the drawing) is connected to the electronic circuit of the mobile phone 81 via the connection portion (the drawing is omitted). The antenna conductor 87 of the monopole antenna 85 is covered by the composite magnetic body 88. In the mobile phone 81, the connection terminal 86 of the monopole antenna 85 is inserted into or removed from the external antenna terminal 84. Fig. 11 shows the communication of the present embodiment. Another embodiment of a mobile phone of the device, the mobile phone 91 is a display portion (10) having a display function constituted by a liquid crystal display or an organic electroluminescence display or the like in front of the casing 92. The back side of the back side is provided with a bottom plate 93' disposed at a position that is not overlapped with the bottom plate 93 (above the bottom plate 第 in the figure), and an L-shaped antenna 94 is disposed in the L-shaped antenna % and is provided by the copper wire The antenna conductor 95 composed of an equal conductor is connected to the bottom plate 93 via a connector or the like, and an electronic circuit (not shown) of the mobile phone 91 is connected via the connection portion. The antenna conductor 95 of the L-shaped antenna 94 is composed of Compound 32 3724 71 201230083 The magnetic body 9.6 is covered. Fig. 12 is a partial perspective view showing another example of a mobile phone of the communication device of the embodiment, the mobile phone 101 being in front of the casing 102 by a liquid crystal display The bottom surface side of the display portion (not shown) having a display function constituted by an organic electroluminescence display or the like is provided with a bottom plate 103, and is not overlapped with the bottom plate 103 (above the bottom plate 103 in Fig. 12). A helical antenna 1〇4 is provided in which the helical antenna conductor 1〇6 wound around the rod-shaped composite magnetic body 105 is connected to the bottom plate 1〇3 via a connector or the like, and is connected via the connection portion. An electronic circuit (illustration omitted) to which the mobile phone 101 is connected. The spiral antenna 1〇4 is formed by winding a rod-shaped composite magnetic body 1〇5, and winding an antenna conductor 1〇6 made of a conductor such as a copper wire into a spiral shape. Fig. 13 is a perspective view showing an example of a mobile phone with a protective cover of a communication device of the present embodiment, the mobile phone ill with a protective cover attached to the mobile phone 112 and the mobile phone 112. A protective cover 113 of one of the attachments is constructed. The mobile phone 112 is provided with a display unit 115 having a display function, such as a liquid crystal display or an organic electroluminescence display state, on the front surface of the housing 114. The side surface of one side of the housing 114 is provided with a connection. An external antenna terminal 116 (not shown) provided on the inner surface side of the display unit 115. On the other hand, the protective cover 113 is made of a flexible resin or the like and is deformable, and is provided so as to cover the peripheral portion and the back surface of the casing 114 after the display portion 115 is removed, and the protective cover 113 is provided. On one side, a dipole antenna 121 is provided. The dipole antenna 121 is covered with a conductor such as a copper wire by a composite 72 323724 201230083 magnetic body 123. The dipole antenna 121 ′ is provided to The dipole antenna i2i is connected to the connection terminal ι24 of the external antenna terminal 116. The dipole antenna 12 is provided with a pair of two monopole antennas. When the cover nu is at (iv) 112, the face cake is not at the position of the display portion 15. Further, when it is disposed at a position overlapping the display portion (1), it is preferable to increase the material of the protective cover 113, and to provide an appropriate space between the dipole antenna 121 and the display portion 115 inside the protective cover ι3. The mobile phone with the protective cover, the bipolar antenna i2i is connected to the bottom plate (not shown) provided on the inner surface side of the display unit 115 via the connection terminal 124 and the outer red material 116. An electronic circuit (not shown) for connecting a mobile phone to the connection unit. In the mobile phone lu with the protective cover, the connection terminal 124 of the protective cover 113 is inserted into the external antenna terminal ΐ6 of the mobile phone 112, and the (four) cover 113 is covered in the mobile phone in this state. The dipole antenna 121 is connected to the mobile phone 112. Further, the dipole antenna 12i can be removed from the mobile phone 112 by removing the protective cover 113 from the mobile phone 112. Fig. 14 is a plan view showing another example of a mobile phone with a cover provided in the communication device of the embodiment, and Fig. 15 is a cross-sectional view taken along line A-A of the figure, with a protective cover The mobile phone 131 is composed of a mobile phone 132 and a protective cover 133. The mobile phone 132 is provided with a display unit having a display function including a liquid crystal display or an organic electroluminescence display or the like on the front surface of the casing 134. 135. On the upper surface of the casing 323724 73 201230083 134, an external antenna terminal 136 connected to a bottom plate (not shown) provided on the inner surface side of the display unit 135 is provided. On the other hand, the protective cover 133 is made of a flexible resin or the like and is deformable so as to cover the peripheral portion and the back surface of the casing 134, and is provided on the upper portion of the back surface of the protective cover 133. A spiral antenna 141. The helical antenna 141 is covered with a helical antenna conductor 142 by a composite magnetic body 143, and a connection terminal 144 for connecting to the external antenna terminal 136 is provided in the twisted antenna 141. When the protective cover 133 is attached to the mobile phone 132, the helical antenna 141' is preferably located at a position that does not overlap the display portion 135. Further, when it is disposed at a position overlapping the display portion 135, it is preferable to increase the thickness ' of the protective cover 133' and to provide an appropriate space between the spiral antenna 141 and the display portion 135 inside the protective cover 133. The mobile phone 131 with the protective cover is connected to the bottom plate (not shown) provided on the inner surface side of the display unit 135 via the connection terminal 144 and the external antenna terminal 136, and is connected thereto. An electronic circuit (not shown) for connecting a mobile phone to the connection unit. In the mobile phone 131 with the protective cover, the connection terminal 144 of the protective cover 133 is inserted into the external antenna terminal 136 of the mobile phone 132, and the protective cover 133 is covered on the mobile phone 132 while being held therein. The helical antenna 141 can be connected to the mobile phone 132. Further, the helical antenna 141 can be detached from the mobile phone 132 by removing the protective cover 133 from the mobile phone 132. 323724 201230083

In each case, due to the loaded monopole antenna 74, the monopole antenna 94, the helical antenna 104, the dipole antenna 121, and the spiral antenna system, the antenna can be placed in the mobile phone with a small space to the electromagnetic wave without being transmitted by the antenna. The mobile phone that is blocked by parts other than the one. Performance under the inner body of the frame. Since the L-pole antenna 121 and the helical antenna 141 can be disposed in an accessory such as 133, the composite magnetic body according to the present embodiment can be lifted without the mobile phone having the auxiliary antenna installed in the mobile phone. The average thickness of the flat magnetic particles is 〇.〇1/iin or more 〇5em or less, and the average long diameter is 0.05am or more and 10/zm or less, and the average aspect ratio (long diameter/thickness) is 5 or more. 'Therefore, the real er of the complex permeability of the frequency band from 70MHz to 5〇〇MHz can be greater than 1, and the loss tangent tan (5# is 〇.丨 below, thus greatly shortening the wavelength shortening rate of the frequency band) Therefore, if the composite magnetic body is applied to an antenna of a VHF band, generation of eddy current on the surface of the composite magnetic body can be prevented, and the real part yr' of the complex magnetic permeability can be prevented from being lowered, and the antenna can be further realized. The method for producing a composite magnetic material according to the present embodiment includes a slurry obtained by dispersing spherical magnetic particles having an average particle diameter of 〇. 5# in or less in a solution containing a surfactant, and dispersion. F, fill In a closable container, the total volume of the slurry and the dispersion medium is in phase with the volume in the container, and the liquid is scrambled together with the dispersion medium in a sealed state to form the spherical shape. The first step of deforming the magnetic particles and forming a flat magnetic particle by 323724 75 201230083; dispersing and mixing the flat magnetic particles in a solution in which an insulating material is dissolved in a solvent to form a second forming material And a third step of forming a molded material by molding or applying the molding material to a substrate to obtain a molded body, and drying/hardening the drying/hardening step of the molded body, thereby being easily produced The complex magnetic body of the complex magnetic permeability of the frequency band of 70 MHz to 500 MHz is large, and the loss tangent of the complex magnetic permeability tan5 &quot; is a composite magnetic body of 0.1 or less. Further, 'the composite magnetic body according to the present embodiment When the porosity of the body is set to 20% or less, the composite magnetic body can increase the real part of the complex magnetic permeability, and the value of the real part er of the complex permittivity is almost constant. Thus, the application of electronic parts or make the electronic apparatus of the composite magnetic body to achieve miniaturization, and can suppress the power loss caused by the impedance matching. Further 'When the 70MHz to 500MHZ multiplexing loss of magnetic permeability tangent tan &lt;5/z is set to 0.05 or less, and the loss tangent of the complex dielectric constant is tan (j ε is set to 0.1 or less, and the gain of the electronic component or the electronic device can be improved. Further, the main bond has a ring structure and has a ring structure The composite magnetic material in which the first resin of the g-b group based on the monomer unit is used as the insulating material can reduce the influence of the steric hindrance formed by the resin on the flat magnetic particles. A composite magnetic body having a high magnetic permeability and a high mechanical strength. Further, since a resin having a functional group polymerized in a monomer unit is used, the bonding of the resin can be made strong, and it can be used as an electronic component or the like. 323724 76 201230083 According to the method for producing a composite magnetic material of the present embodiment, a mixed primary bond having a cyclic structure and having a resin and a flat plate polymerized in a monomer unit are provided. Magnetic particles, solvent, and necessary hardener, (iv) to the forming material; applying a magnetic field to the forming material to orient the flat magnetic recording And a step of drying/hardening the molded body in which the flat magnetic particles are turned backward, so that a composite magnetic body having a high r 'h' and a high mechanical strength can be easily produced. The orientation of the flat magnetic particles in the coating film can be improved by applying a magnetic field to the coating film once or plural times. Further, according to the composite magnetic body containing the main chain, the main chain has a cyclic structure and has The second resin which is a functional material of a functional group polymerized in a monomer unit and the second resin which imparts flexibility to the second resin can reduce the steric hindrance formed by the resin from the flat magnetic particles. The effect of the slab-shaped magnetic particles on the unidirectional orientation is improved, and ΐτ' is improved. Further, since the second resin imparts flexibility to the first resin, the flexibility and expansion of the composite magnetic body itself can be improved. Therefore, it is possible to provide a composite magnetic body which is high in yr' and mechanically strong, has flexibility to be wound up to a roll-like degree, and is excellent in productivity. The first resin of the polymerized functional group can strengthen the bonding of the resin, and can have sufficient mechanical strength using a molded body such as an electronic component. Further, even if it is a micron or nano grade, It also has the flexibility and flexibility of 77 323724 201230083, so it can be reduced to a hole that easily enters the flat magnetic particles. ·, · The composite magnetic body that causes the decrease The steric obstacle formed by the resin is as follows: the second resin' can reduce the amount of resin produced by the first flat magnetic particles to reduce the resin's resin-to-resin to the pores. Further, the ancient composite according to the present embodiment is a composite magnetic material of the second embodiment. The method for producing a mixed main chain having a cyclic structure is the first method of the energy base and the polymerization of the second monomer unit. The slab-shaped magnetic particles and the second flexible resin of the flying-flexible shape, the molding material is formed into a predetermined shape: a step of preparing a molding material; and a magnetic field is applied to make the step in the molded body The step of orienting the formed body; and drying the shaped body after the unidirectionally oriented magnetic particles are oriented in a unidirectional manner, so that the deer/hardening step can be easily produced. She is a soft and productive composite magnetic body. &quot;...Mechanical strength is good&apos;. Further, by applying a magnetic % of the flat magnetic particles in the coating film to the coating film, the composite magnetic body having a high height can be provided. Therefore, the antenna of the present embodiment can be manufactured by receiving, transmitting, or receiving electromagnetic waves of a frequency band of 7 〇 MHz to 5 〇 _z by mounting the composite of the present embodiment. The antenna is further miniaturized. That is, a small antenna having a length 1/4 of a shorter wavelength can be obtained by the wavelength shortening effect. 323724 78 201230083 When the composite magnetic material having a porosity of 20% or less in the present embodiment is provided, the real part of the complex magnetic permeability can be obtained in the frequency band of 70 MHz to 500 MHz, and the complex dielectric constant is 7 or more. The real part εΓ is 15 or more, and (Vr′ . ε r,)−1/2 is 〇. 1 or less, (//r, / £ Γ,) 1/2 is a performance of 〇5 or more and 1 or less. Therefore, by the wavelength shortening effect, it is possible to provide an antenna which is smaller in length than 1/4 of the desired wavelength, suppresses power loss caused by impedance matching, and has high transmission efficiency. Therefore, even a long wavelength electromagnetic wave in the VHF band like a multimedia broadcast can provide a small antenna capable of receiving the size of a mobile phone by the wavelength shortening effect. According to the communication device of the present embodiment, since the small antenna of the present embodiment is provided, the degree of freedom in the place where the antenna is less likely to be affected by other electronic devices that block the radio wave is high, and the transmission can be received and transmitted. Small communication device. [Monopolar Antenna] Fig. 16 is a schematic view (oblique view) showing a monopole antenna according to an embodiment of the present invention, and Fig. 16B is a cross-sectional view taken along line A-a of the figure 16 . The monopole antenna 1620' of the present embodiment has a rod-shaped antenna conductor 1622 and a composite magnetic body 1621 of the present embodiment which is coated on the surface of the antenna conductor 1622. In the present embodiment, as shown in Fig. 16B, a composite magnetic body 1621 having a square cross section is formed on the circumferential surface of the cylindrical antenna guide 1622, and a monopole antenna having a quadrangular prism shape is formed as a whole. Monopole day 323724 79 201230083 Line ^20 'Typically as shown in Fig. 16a, it is connected to the center of the conductor bottom plate 1624 of the overall size via a connector or the like, and is connected to the AC signal by using the connection portion 1626 as a power supply point. Transmitter 丨 625. The shape of the antenna conductor 1622 used in the monopole antenna 1620 is not particularly limited, and a generally known shape such as a linear rod antenna, a whip antenna, a curved spiral antenna, or a meander antenna can be used. . Among these, a linear antenna is preferable because it is difficult to generate an electrostatic capacitance between the antenna conductors and a high antenna gain can be obtained. Further, the "straight line" in the present embodiment means that the resonance portion of the antenna has a straight rod shape or a plate shape. Therefore, the shape of the linear monopole antenna 162A is not only a normal angular column shape but also a prismatic shape or an elongated flat plate shape. Further, the antenna conductor 1622 which is a core material is also the same, and may be any of a cylindrical shape, a prismatic shape, and a flat plate shape. The antenna conductor 1622 is preferably a conductive metal or alloy. Examples of the metal include, for example, copper (Cu), silver (Ag), nickel (Ni), platinum (pt), gold (Au), and the like. The alloy is preferably an alloy selected from two or more of these metals. . The cross-sectional shape ' of the antenna conductor 1622 is not particularly limited as long as it can be mounted on the size of the portable terminal, and may be, for example, a square or circular cross-sectional shape in which the straight edge D is about 0.5 mm to 2 min. . Further, since radio waves of 160 MHz to 222 MHz flow on the surface of the conductor, it is also effective to configure the antenna conductor 1622 as a tape having a large surface area. The strip antenna conductor 1622 preferably has a width of 〇.5min to 2_' thickness of 0.05 to 0.2mm» the length L of the antenna conductor 1622, as long as it can be easily loaded to the length of the portable 80 323724 201230083 There is no particular flaw, preferably 4g 丽 or more __ π ϋ or less. By setting the length l to the above range ', it can be easily mounted on the portable terminal, and can be configured as _ 1620 in the _ band of 16_2 to 2·ζ. &lt;Composite magnetic body&gt; The composite magnetic body 1621 of the present embodiment can be any of the above composite magnetic bodies. In the composite magnetic body 1621, the real part # r' of the complex magnetic permeability in the frequency band of 160 MHz to 222 MHz is preferably 3 or more, more preferably 6 or more. When the real part of the complex magnetic material 1621 is 3 or more, the thickness of the coating of 2.4 mm or more can be used, and even when the antenna conductor 1622 having a length of 200 mm is used, A frequency of 2 〇〇 MHz causes a resonant monopole antenna 1620. And the thickness of the composite conductor 1622 is reduced to 1.2 mm, even if the thickness of the composite conductor 1622 is reduced to 1.2 mm. A monopole antenna 1620 that can resonate at a frequency of 200 MHz is used using the antenna conductor 1622 having a length of 200 mm. When the coating thickness d of the composite magnetic body 1621 is too thick, the antenna becomes thick, and it becomes difficult to mount the device configuration or design relationship of the portable terminal. Therefore, practically, the coating thickness d of the composite magnetic body is in the range of 10 mm or less. Further, the composite magnetic body 1621 and the antenna conductor 1622 need not be adhered to each other, and 323724 201230083, for example, may be configured such that the antenna conductor 1622 is disposed inside the cylindrical composite magnetic body 1621 and is covered in appearance. In the composite magnetic body 1621 of the present embodiment, the loss tangent tan 5 of the complex magnetic permeability in the frequency band of 160 MHz to 222 MHz is preferable. By borrowing a W〇.〇5 or less, the gain of the antenna due to the signal loss in the frequency band of the second=222 MHz can be prevented from being lowered. &lt;Manufacturing Method of Monopole Antenna&gt; The method for manufacturing the monopole antenna 1620 of the present embodiment includes: processing the spherical magnetic particles into a flat shape to form the first transfer U of the flat magnetic particles The second step of forming the molding material by the magnetic material (4) and the insulating material, and the third step of coating the molding material containing the flat magnetic particles on the antenna conductor. The steps are explained below. &lt;First Step&gt; The step is the same as the above-described step j-th step, and therefore the description of the method for producing the i-th magnetic body of the flat magnetic particles is omitted. &lt;Second Step&gt; Next, in the "2 steps", the plate-like heteromixes 2 = the solution in which the insulating material is dissolved (4) the filament forming material. When the edge material is chemicalized, it becomes a composite magnetic body 1621 in which a flat Weibo is dispersed in an insulating material. System, 323724 82 201230083 Recovering, when using an antenna, 'it is better to have high mechanical strength, and the material for the hygroimin 2 for moisture absorption, for example, the ring can be appropriately returned to the tree J!, ^ (4) and % sold , benzene resin, polyphenylene poly 31 tree 匕曰 / _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _, 莰 = fat or thermoplastic resin. These resins may be used alone or in combination of two or more. It is preferable to cut the mechanical strength and the shape processing property. The thermoplastic resin is preferably a polystyrene resin, and the coffee type: the type and amount of the resin can be used in response to the special use of the resin. The solvent is not particularly limited as long as it can dissolve the resin. For example, methanol, ethanol, 2H t-free ethyl acetate, acetic acid, butyl acetate, lactic acid, and internal two: monomethyl hydrazine can be suitably used. , propylene glycol monoethyl ether acetate, butanol early glycol monomethyl serotonol), ethylene glycol monoethyl hexylene glycol single butyl bond (butyl sulco), diethylene glycol mono saki... (4) Ethylene, etc., acetone, butyl, methyl isobutyl _, B: ketone, hexanone and other ketones, stupid, toluene, stimulant, dimethyl ketoamine, hydrazine, hydrazine-dimethyl The base is brewed with a special aromatic arsenic amide, such as anthraceneamine, which is used in the above-mentioned lyomethyl group. It is used alone or in combination with two kinds of 323724 83 201230083 The content of the bulk particles is hardened to become a composite magnetic body 1621 with respect to the volatile component in the molding material. It is preferably 20% by volume or more and 50% by volume or less, and more preferably 30% by volume or more and 40% by volume or less. When the content of the flat magnetic particles is less than 20% by volume, the flat magnetic particles are too small. When the magnetic permeability of the composite magnetic material 1621 is lowered, it is not preferable. When the magnetic permeability exceeds 50% by volume, the amount of the flat magnetic particles is too large, and the fluidity of the molding material is lowered. As a result, the orientation of the flat magnetic particles in the molding material is caused. The decrease in the magnetic properties of the composite magnetic material 1621 may be lowered, which may be undesirable. The method of dispersing and mixing the flat magnetic particles with the insulating material is not particularly limited, and a planetary grinder, a sand mill, or the like may be used. A stirring device such as a ball mill, or a kneading device such as a pressure kneader, a biaxial kneader, or a jet mill can be used. When a thermoplastic resin is used, heating can be performed as necessary. &lt;Third Step&gt; In the third step, the molding material produced in the second step is applied to the outer peripheral surface of the antenna conductor 1622, and the molding material is cured to form a composite magnetic body 1621. Thereby, the monopole antenna 1620 of the present embodiment can be obtained. The method of applying the molding material to the antenna conductor 1622 and coating the composite magnetic body 1621 is not particularly limited as long as it can cover the composite magnetic body 1621 which is desired to be coated with the thickness d. The coating thickness d of the composite magnetic body 1621 is determined according to the length L of the antenna conductor and the magnetic permeability of the composite magnetic body 1621. For the coating method of the composite magnetic body 1621 84 323724 201230083, for example, the antenna conductor body is sandwiched between the inside of the molding material by a heated molding method, an injection molding method, or an extrusion molding method, and is formed and cured (4). The method. Further, when a thermosetting resin is used, it is preferred to cure the molding material by heat treatment or heat molding in a reducing gas or in a vacuum. Further, the above-mentioned molding material may be formed into a sheet-like or film-like shape of an arbitrary shape to form a desired coating thickness, and the antenna conductor body may be sandwiched and covered. The molding method for forming the molding material into a sheet shape or a film shape can be suitably used, for example, by a hot press method, a knife-to-knife method, or an injection molding method. In the above methods, from the viewpoint of easily orienting the flat magnetic particles in the insulating material, it is preferred to apply a roll forming method which is stretched into a planar shape. In order to adjust the viscosity at the time of stretching, it is preferred to add a plasticizer or a surface treatment of the slab-shaped magnetic particles. If desired, it is preferable to carry out the process of orienting the non-plate-shaped magnetic particles by the orientation of the magnetic field while maintaining the fluidity of the one port 2. The direction in which the plate-like magnetic particles are oriented is preferably a magnetic field generated by the antenna 1620, and the effect of shortening the wavelength of the two-step line by the long distance in the flat-shaped magnetic particles. That is, it is preferable that the longitudinal direction is such that the long axis of the flat magnetic particles is substantially parallel. Further, when the composite composite 1621 is formed, when t is required to adjust the viscosity of the material described above, the solvent contained in the molding material can be volatilized and/or frozen, and then molded. 323724 85 201230083 In addition, when the orientation treatment of the flat magnetic particles is necessary, the molding material is formed by sandwiching the antenna conductor 1622 inside, and a magnetic field is applied to the molding material before drying to orient the flat magnetic particles. The circumferential direction of the antenna conductor 1622 is substantially parallel to the long axis of the flat magnetic particles. As described above, according to the monopole antenna of the present embodiment, the antenna conductor is covered by the composite magnetic body in which the flat magnetic particles are dispersed in the insulating material, so that it can be mounted on the portable terminal. The miniaturization can be used in a low frequency band of 160 MHz to 222 MHz. Further, when the real part of the complex magnetic permeability in the frequency band of 160 MHz to 222 MHz is 3 or more, the composite magnetic body 1621 of the present embodiment is covered. 2.4 or more, even if the antenna conductor is 2 〇〇 mm or less, it can resonate at a frequency of 200 MHz. In addition, when the real part er of the complex magnetic permeability in the frequency band of 160 MHz to 222 MHz is 6 or more, the composite magnetic body 1621 of the present embodiment is covered by 1.2 mm or more, and even if the antenna conductor is 2 or less, It can also resonate at a frequency of 200MHz. The linear monopole antenna 162A of the present embodiment can be further reduced in size by using a matching circuit. (Examples) Hereinafter, the present invention will be specifically described by way of Examples and Comparative Examples, and the present invention is not limited to the Examples. Furthermore, the characteristics of each example were evaluated by the following methods. (1) Observation of flat magnetic particles 323724 86 201230083 It was observed with a scanning electron microscope s_4000 (manufactured by Hitachi High-Tech Co., Ltd.). (3) Electromagnetic characteristics (//r', #r&quot;, tan 占#, er, ε r', tan 6 ε ) were measured by magnetic permeability, and the Material Analyzer Ε4991Α type (made by Agilent Technologies) ), set at room temperature (25 〇 c) t in the atmosphere. Then, based on these, r and ε r are used to calculate (Γ, · ε r')' 1/2 and (a r, / ε r') 1/2. (4) Porosity ratio The size and quality of the composite magnetic body were measured. The measured density was calculated from these measured values. On the other hand, the theoretical density (and measured density) of the resin is measured by measuring the size and mass of the cured body of only the resin, and is calculated from the measured values. Further, the theoretical density of the flat magnetic particles is the theoretical density of X-rays obtained from the X-ray diffraction pattern of the flat magnetic particles. This value is substituted into the formula (4), and the porosity of the composite magnetic body is calculated. [Example 1] 200 g of Permalloy (trade name) magnetic particles containing 4% by mass of an average particle diameter of 0.25/m was mixed with diphenylbenzene in which a nitrogen-containing graft polymer as a surfactant was dissolved. A slurry of 400 g and 400 g of isopropyl alcohol was prepared to prepare a slurry. Next, a sand mill Ultra Apex Mill UAM-5 (manufactured by Shou Industrial Co., Ltd.) having a circulating seal type as shown in Fig. 2 and having a container volume of 5 L was used as a closed container, and the average particle diameter of the dispersion medium was 200 #m. The oxidized hammer beads 87 323724 201230083 pellets are placed in the inner container of the closed container. Here, the system is constructed in such a manner that the system is closed and looped. In order to re-inject the state in this state, the number of revolutions in the closed container is stirred until the slurry is dense. And the speed becomes a heart/minute, and a flat magnet is produced = = the obtained flat magnetic particle is dried and the slanted magnetic particle is added to the epoxy resin In the resin varnish of (4) ,, “by the knife coating, the formation of the ride (four) is a square film of 3〇mm square and 100/zra thick after hardening. Then at 9 (TC, atmosphere) The film was dried for 1 hour to form a dry film, and then compression-molded in a vacuum molding apparatus. The molding conditions were such that the temperature was raised to 130 Torr in 20 minutes under normal pressure, and the pressure of 2 MPa was applied for 5 minutes, and then the temperature was raised to 16 The resin is cured for 4 minutes to harden the resin, and the square film-like composite magnetic body of 30 mm square and 50/m thick is used. The complex magnetic permeability of the composite magnetic body is measured by a Material Analyzer. The real part of the magnetic permeability is #r, which is 13, and the loss tangent tan 6 # is 0.02, and the real part of the complex permeability of 220 MHz/zr is 13, and the loss tangent tan5 // is 0.04. Scanning electron microscope (SEM) to observe the shape of the composite magnetic body, flat The average thickness of 50 particles of morphological particles is 〇. 08# m 'the average length is 〇. 5 // m, and the average aspect ratio is 6.2. In addition, the spherical 88 323724 201230083 magnetic particles are either not thick 0. 01 β m or more 〇· 5 # m The following magnetic particles having a length of 0.05 &quot;m or more and 10#m or less and an aspect ratio of 5 or more are not substantially observed. The complex magnetic permeability (real part / zr, imaginary part A rn) and loss tangent (tan) of the composite magnetic body are shown &lt;5 μ), Fig. 18 is a scanning electron microscope (SEM) photograph showing the composite magnetic body. [Comparative Example 1] 20 g of Permalloy (trade name) magnetic particles having an average particle diameter of 4. 25 Μ 01 containing 4% by mass of zinc was mixed with a nitrogen-containing graft polymer as a surfactant. A slurry of benzene 4 g and 40 g of isopropyl alcohol was prepared to prepare a slurry. Next, using an upper open-type sand mill as shown in Fig. 1 as an open container, the oxidized error beads having an average particle diameter of 200/ΖΠ1 as a dispersion medium are placed in a vessel of the open container, and then connected. Only then entered the above Rong·Li. Here, the magnetic particles were produced by mixing the flow rate at the outermost circumference in the vessel at a number of revolutions of 10 μm/sec for 30 minutes. Then, the obtained magnetic particle ’ was used in the same manner as in Example 1 to obtain a film-like composite magnetic body of Comparative Example 1. The complex magnetic permeability of the composite magnetic body was measured by a Material Analyzer, and as a result, the real part of the complex magnetic permeability of 90 MHz / / r' was 2.6 ′ loss tangent tan &lt;5 &quot;为〇. 〇9, and the real part of the complex permeability of 220 MHz is 2.8, and the tangent tangent tan (5# is 0.11. In addition, by scanning electron microscope (SEM) The shape of the composite magnetic body was observed, and the magnetic particles were irregularly overlapped with each other, and it was found that substantially 89 323 724 201230083 has a thickness of 0.5 or more. The long diameter and the aspect ratio are also uneven. The complex magnetic permeability (real part er, imaginary part/zr&quot;) and loss tangent (tan 5) of the composite magnetic body are shown, and Fig. 20 shows a scanning electron microscope (SEM) photograph of the composite magnetic body. [Example 2] 12 dry films each having a length of 250 mm, a width of 30 mm, and a thickness of 60 #m were produced by the same method as in Example 1. Then, these dry films were laminated, between the sixth and seventh sheets. A copper wire having a diameter of 0.6 μm and a length of 250 mm was used as an antenna, and then compression-molding was carried out under the same conditions as in Example 1 using a vacuum molding apparatus, and a length of 25 was produced as shown in FIG. A composite magnetic body 63 composed of a laminate of 〇mm, a width of 3 mm, and a thickness of 0.8 mm of a dry film is sandwiched by a copper wire. The monopole antenna 61 of the antenna conductor 63 is constructed. Then, the monopole antenna 61 is connected to the center of the conductor bottom plate 64 of the 5 mm square, and the AC signal transmitter 66 supplies 50 Ω with the connection portion 65 as a power supply point. Here, the resonance frequency of the monopole antenna 61 is measured. Further, in order to compare the resonance frequency of the copper wire having a diameter of only 0.6 mm and a length of 250 mm, the resonance frequency is 273 MHz only for the copper wire. Compared with the three-pole material of the composite magnetic body of the second embodiment, the ratio of the shortening rate of the wavelength is calculated. From the result, it is known that the composite magnetic body of the present invention is used to make the composite magnetic body The length of the antenna of the band of 180 MHz is reduced by about 34%. 323724 90 201230083 [Example 3] The second J pentadiene type epoxy resin EPICLON HP-7200L (manufactured by DIC Corporation) was used as a hardener. The amount of 1-isobutylimidazole which is 1% by mass based on the total amount of the epoxy resin and the hardener is 75 mass% based on the total amount of the resin, the hardener, and the flat magnetic particles. -Fe20% by mass-Zn5 mass% of Ni-Fe-Zn The total mass of the flat magnetic particles composed of gold having an average length of 2.5 mm and an average thickness of 3.3/zm and an average aspect ratio of 8.3 and the total mass of the flat magnetic particles and the resin and the hardener is The viscous material is 0. 4Pa · S. The viscous material is 0. 4Pa · S. Then, the molding material was applied onto a polyethylene terephthalate (PET) film by a bar coater to form a sheet so as to have a length of 50 mm x a width of 50 mm x a thickness of 0.1 mm after hardening. After the sheet was formed, a magnetic field of 900 gauss was applied to the surface of the sheet for 6 minutes in the horizontal direction. Next, a warm air of 80 ° C was blown for air drying. Next, a molding pressure of 10 MPa was applied at DL ° C of the softening point of the resin, and then the composite magnetic body of Example 3 was obtained at 16 (hardening reaction for 2 hours under TC). The first watch shows the examples. The porosity of the composite magnetic body of 3 and the magnetic properties measured by the Material Analyzer at 200 MHz. Further, Fig. 21 shows the complex magnetic permeability of the composite magnetic body of Example 3 from 10 MHz to 1 GHz. Department and tan6 &quot; 'Fig. 22 shows 91 323724 201230083 showing the real part er' and tan 5 ε of the complex permittivity. [Example 4] Mixing a dicyclopentadiene type with a mass ratio of 85:15 Resin and liquid epoxy resin Rikaresin ΒΡΟ-20 (resin made by Nippon Chemical & Chemical Co., Ltd.) replaced the dicyclopentadiene type resin, and the temperature at which the molding pressure was applied was set to 16 "c". Further, the composite magnetic body of Example 4 was obtained in the same manner as in Example 3. The first table shows the porosity of the composite magnetic body of Example 4 and the magnetic properties measured by the Material Analyzer at 200 MHz. In addition, '23 shows the compound of Example 4 The real part of the complex magnetic permeability from 10 MHz to 1 GHz // r, and tan 5 //, Fig. 24 shows the real part er of the complex permittivity, and tan 5 ε. [Example 5] Preparation of a slurry In the case of the molding material, the mixing time of the planetary mixer was changed from 15 minutes to 5 minutes, and the composite inert body of Example 5 was obtained according to Example 3. The first surface showed the composite magnetic body. The porosity and the magnetic properties measured by the Material Analyzer at 200 MHz. [Example 6] The temperature at which the molded body was molded was set to 16 (TC, otherwise, according to Example 3 The composite magnetic body of Example 6 was obtained. The first surface shows the porosity of the composite magnetic body and the magnetic properties measured by a Material Analyzer at 200 MHz. 92 323724 201230083, [Comparative Example 2] The average length of the magnetic field of the average long diameter of 2. 5 / / m, the average thickness of 3. 3 V m, the average aspect ratio of 8. 3 A composite magnetic piece of Comparative Example 2 was produced in the same manner as in Example 3 except for the flat magnetic particles. The first table shows the porosity of the composite magnetic body and the magnetic properties measured by the Material Analyzer at 200 MHz. The first table porosity (3⁄4) βτ' tan 5 u ε r* tan δ ε Ur' · er'), {βτ' / εν )1/z Example 3 13.3 9.8 0.035 26.5 0.052 0.06 0. 61 Example 4 11.1 9.3 0.017 32.3 0.074 0.06 0.54 Example 5 29.4 7.2 0.024 30.5 0.16 0. 07 0.49 Example 6 26.0 7.1 0. 038 30.8 0.13 0. 07 0.48 Comparative Example 2 12.5 3.7 0. 037 19.2 0.066 0.12 0.44 According to the first table ', the composite magnetic bodies of Examples 3 and 4 were found to have porosity and examples. The composite magnetic body of 5 and 6 is 2% or less. Therefore, it was confirmed that the composite magnetic bodies of Examples 3 and 4 had an increase in θ r' as compared with the composite magnetic bodies of Examples 5 and 6. In addition, in Comparative Example 2, even if the porosity of the composite magnetic material is 2% or less, the magnetic particles having an average aspect ratio of less than 5 are used. Therefore, it was confirmed that the //r' of the composite magnetic material was small and could not be obtained. A sufficient ar for miniaturization of electronic parts or electronic equipment. [Example 7] The dicyclopentadiene type epoxy resin EPICLON HP-7200L (manufactured by DIC Corporation) was used as a curing agent, and the total amount of the curing agent was 1% by mass with respect to the epoxy. Isobutan 9 saponin, succinyl-2-methylimidazole, from the total amount of the hardener and the flat magnetic particles relative to the resin 323724 93 201230083, 30% by volume of Ni75% by mass-Fe20% by mass-Zn5 a flat magnetic particle composed of a mass % of an alloy having an average major diameter of 2.5 and an average thickness of 0.3/zm and an average aspect ratio of 8.3 and an average holding force of 35 Å (0e), and a ring The ketone was put into a planetary mixer and mixed for 5 minutes to obtain a slurry-like molding material. The viscosity of the molded material is 0. 4Pa · S. Then, the formed material was applied onto a polyethylene terephthalate (PET) film by a bar coater to form a sheet having a length of 50 mm x a width of 50 mm x a thickness of 0.1 mm after hardening. After the sheet was formed, the sheet was conveyed at a speed of 2 m/min on the orienting device 11 shown in Fig. 3 and a magnetic field of 1200 gauss was applied. Next, a warm air of 80 ° C was blown for air drying, followed by a hardening reaction at 160 ° C for 2 hours to obtain a composite magnetic body of Example 7. The flat magnetic particles in the composite magnetic body were observed by a scanning electron microscope (SEM), and the long-axis direction of the flat magnetic particles was measured to be horizontal with respect to the sheet surface for 50 flat magnetic particles. The angle formed by the direction (orientation direction) (relative to the slope in the horizontal direction). As a result, the average value of the 50 slopes was 8.2 degrees, and the flat magnetic particles were oriented in a direction substantially horizontal to the sheet surface, and it was confirmed that the orientation was good. Further, the composite magnetic body has a y r of 200 MHz at room temperature in the atmosphere of 8.5. [Example 8] The content of the tabular magnetic particles was 40% by volume based on the total amount of the resin, the curing agent, and the flat magnetic particles, and 94 323724 201230083 was the same as in Example 7. The composite magnetic body of Example 8 was produced by operation. The average value of the slope is 8.5. The average value of the slope is 8.5. The average value of the slope is 8.5. The flat magnetic particles were oriented almost horizontally with respect to the sheet surface, and it was confirmed that the orientation was good. Further, the complex magnetic permeability of the composite magnetic material was measured in the same manner as in Example 7, and the /z r' at 200 MHz in the atmosphere at room temperature was 9.3. [Example 9] A phenolic novolac resin TD-2131 (manufactured by DIC Corporation) was added as a curing agent in an amount equal to the total amount of the epoxy resin, and the total amount of the epoxy resin was 1% by mass in place of the epoxy resin. A composite magnetic body of Example 9 was obtained in the same manner as in Example 7 except that 1-isobutyl-2-methylimidazole was used. The average value of the slope is 8.6. The average value of the slope is 6.8. The average value of the slope is 8.6. The flat magnetic particles were oriented almost horizontally with respect to the sheet surface, and it was confirmed that the orientation was good. Further, the complex magnetic permeability of the composite magnetic material was measured in the same manner as in Example 7, and the /z r' at 200 MHz in the atmosphere at room temperature was 8.3. [Example 10] A composite magnetic body of Example 10 was produced in the same manner as in Example 7 except that the magnetic field applied to the sheet in Example 7 was changed from 1200 Gauss to 95 323724 201230083 1000 Gauss. In the same manner as in Example 7, the slope of the plate-like magnetic particles in the composite magnetic material was measured in a direction perpendicular to the surface of the sheet, and the average value of the slope was 12.5. The flat magnetic particles were oriented almost horizontally with respect to the sheet surface, and it was confirmed that the orientation was good. The compositive magnetic permeability of the composite magnetic material was 7.7 in the atmosphere at room temperature of 200 MHz. [Example 11] A composite magnetic body of Example 11 was produced in the same manner as in Example 7 except that the magnetic field applied to the sheet in Example 7 was changed from 1200 gauss to 900 gauss. In the same manner as in Example 7, the slope of the plate-like magnetic particles in the composite magnetic material was measured in a direction perpendicular to the surface of the sheet, and the average value of the slope was 17.9. It was confirmed that the flat magnetic particles were oriented substantially in a direction horizontal to the sheet surface. Further, the complex magnetic permeability of the composite magnetic material was measured in the same manner as in Example 7, and the #r' at 200 MHz in the atmosphere at room temperature was 7.2. [Embodiment 12] In Example 8, after the sheet was formed, the sheet was conveyed at a speed of 2 m/min on the orienting device 21 shown in Fig. 4 and a magnetic field of 900 Gauss was applied instead of the one shown in Fig. 3. The composite magnetic body of Example 12 was obtained in the same manner as the orientation device 11 described above. 96 323724 201230083 In the same manner as in the example 7, the slope of the flat magnetic particles in the composite magnetic body with respect to the direction perpendicular to the sheet surface was measured for 50 flat magnetic particles, and the average value of the slope was 16. At 4 degrees, the flat magnetic particles were oriented almost horizontally with the sheet surface, and it was confirmed that the orientation was good. Further, the composite magnetic body was 7.5 in 200 Hz at room temperature in the atmosphere. [Embodiment 13] In Example 9, after the sheet was formed, the sheet was conveyed at a speed of lm/min on the orienting device 21 shown in Fig. 4 and a magnetic field of 900 Gauss was applied instead of the one shown in Fig. 3. The composite magnetic body of Example 13 was obtained in the same manner as the orientation device 11 described above. In the same manner as in Example 7, the slope of the flat magnetic particles in the composite magnetic material was measured in a direction perpendicular to the sheet surface, and the average value of the slope was 17.0. The flat magnetic particles were oriented almost horizontally with respect to the sheet surface, and it was confirmed that the orientation was good. Further, the #r' of the composite magnetic body at 200 MHz in the atmosphere at room temperature was 7.3. [Embodiment 14] In the embodiment 12, after the sheet is formed, the sheet is conveyed at a speed of 2 m/min on the orienting device 31 shown in Fig. 5, and a magnetic field of 300 Gauss is applied to each pair of magnets instead of the first 4 is the orientation device 21 shown. Next, a warm air of 80 ° C was blown for air drying, followed by a hardening reaction of 97 323 724 201230083 at 160 ° C for 2 hours to obtain a composite magnetic body of Example η. The average value of the slope was 8.3. The average value of the slope was 8. 3 as a result of the slope of the flat magnetic particles in the composite magnetic material. The flat magnetic particles were oriented almost horizontally with the sheet surface, and the orientation was improved. Further, the composite magnetic body has a /z r' of 9.0 MHz at room temperature in the atmosphere of 9.0. [Example 15] A bicyclic fluorene-based epoxy resin EPICLON HP-7200L (manufactured by DIC Corporation) was replaced with a bisphenol type epoxy resin 1256 (manufactured by Mitsubishi Chemical Corporation). The composite magnetic body of Example 15 was obtained in the same manner as in Example 7. In the same manner as in Example 7, the slope of the flat magnetic particles in the composite magnetic body with respect to the direction perpendicular to the sheet surface was measured for 5 sheets of the flat magnetic particles, and the average value of the slope was 215 degrees. These flat magnetic particles were not integrated in one direction, and it was confirmed that the orientation was lowered. 5。 The complex magnetic permeability of the composite magnetic body was measured in the same manner as in Example 7 at room temperature of 2 〇〇 mHz # 。, 5.6. [Example 16] A bisphenol A bis(propylene glycol glycidyl ether) ether type liquid epoxy resin Rikaresin BPO-20 (manufactured by Nippon Chemical and Chemical Co., Ltd.) was used in an amount of 10% by mass based on the total mass of the epoxy resin. The mixture was mixed with a bicyclopentadienyl epoxy resin EPICLON HP-72GGL (manufactured by DIC Corporation) to obtain an epoxy resin 323724 98 201230083 mixture. Next, in the epoxy resin mixture, the total mass of the hardening agent relative to the epoxy resin mixture and the hardener is 1% by mass of oxime-isobutyl-2-methylimidazole, from the epoxy The average length of the resin mixture and the total amount of the hardener and the flat magnetic particles is 40% by volume, and the average long diameter is 2.5 and the average thickness is 0.3 and the average thickness is 0.3. The flat magnetic particles having an aspect ratio of 8.3 and the cyclohexanone having a total mass of 40% by mass based on the epoxy resin mixture and the curing agent and the flat magnetic particles are put into a planetary mixer and mixed for 5 minutes. A slurry-like shaped material was obtained. 5毫米进行进行进行进行进行进行进行进行进行进行进行进行进行进行进行进行进行进行进行进行进行进行进行进行进行进行进行进行进行进行进行进行进行进行进行进行进行进行。 The sheet was formed to obtain a film of the molded article sheet of Example 16. Then, after the sheet was formed, a magnetic field of 900 Gauss was applied to the formed sheet for 6 minutes in the horizontal direction. Next, after blowing 803⁄4 of warm air for air drying, the formed body sheet was peeled off from the PET film, and then a molding pressure of 10 MPa was applied at 11 ° C, and then a hardening reaction was performed at 16 ITC for 2 hours, and Example 16 was obtained. l 〇〇 mmx200min sheet-shaped composite magnetic body. When the sheet-shaped composite magnetic body was peeled off from the PET film, the sheet-shaped composite magnetic body was not damaged. Next, the electromagnetic properties and the porosity of the composite magnetic body were measured. As a result, the real part of the complex magnetic body at 200 MHz was #9, and the real part ε r' of the complex permittivity was 30. 4. The porosity is 19%. 323724 99 201230083 [Example 17] Using the orientation device 第 shown in Fig. 3, the formed body sheet was conveyed at a speed of 2 m/min and a magnetic field of 12 Å Gauss was applied instead of the formed body sheet in the horizontal direction. A magnetic field of 900 Gauss was applied for 6 minutes, and then in the drying/hardening step, a hardening reaction was performed at 160 ° C for 2 hours without applying a molding pressure instead of applying a molding pressure of 1 MPa at 11 rc. The composite magnetic body of Example 17 was obtained by the same operation as in Example 16 except that the "hardening reaction was carried out for 2 hours under TC". Here, the obtained sheet shape was obtained from the PET film. When the composite magnetic material was peeled off, the sheet-shaped composite magnetic material was not damaged. Next, the magnetic properties and the porosity of the composite magnetic body were measured, and as a result, the real part of the complex magnetic permeability of the composite magnetic body at 200 MHz was 9·〇. The real part ε r' of the complex permittivity is 27·1' porosity is 19%. [Example 18] 20% by mass of liquid epoxy resin Rikaresin Bp〇_2 was mixed. Diene type epoxy resin EpiCL〇N Hp_72〇〇 L, in place of the liquid epoxy resin Rikaresin Bp 〇 2 Μ which is set to % by mass, is mixed with the dicyclopentadiene epoxy resin EPICLON HP~72〇ql, except for the other example 15 In the same operation (4), the composite magnetic body of Example 18 was obtained. Here, when the obtained sheet-shaped composite magnetic body was peeled off from the PET film, the sheet-shaped composite magnetic body was not damaged. The magnetic properties of the composite magnetic body were then measured. And the porosity of the composite magnetic body at 9.0 Hz is 9.3. The real part ε r' of the electrical constant of the complex loo 323724 201230083 is 31.0, and the porosity is 11%. In addition, the real yr' of the complex magnetic permeability of the composite magnetic body in the frequency band of 70 to 1000 MHz and the loss tangent of the complex magnetic permeability were measured by the Material Analyzer in the atmosphere at room temperature (25 ° C). 5 β. The measurement results of these are shown in Fig. 25. According to Fig. 25, the real part Mr' of the complex magnetic permeability in the frequency band of 70 to 1000 MHz is 7 or more. [Example 19] Using bisphenol quinone A diglycidyl ether epoxy resin Adeka Resin EP-4010S (manufactured by Adeka Co., Ltd.) A composite magnetic body of Example 19 was obtained in the same manner as in Example 16 except that the phenol a bis(propylene glycol glycidyl ether) ether type liquid epoxy resin was used. Here, the PET film was obtained. When the sheet-shaped composite magnetic material was peeled off, the sheet-shaped composite magnetic material was not damaged. Next, the magnetic properties and the porosity of the composite magnetic body were measured, and as a result, the real part of the complex magnetic permeability at 200 MHz was r, The porosity of the real part of the complex permittivity is 2.9, and the porosity is IQ%. [Example 20] 20% by mass of bisphenol a diglycidyl ether type epoxy resin was mixed

Adeka Resin EP-4010S (manufactured by Adeka Co., Ltd.), in place of a mixture of 1% by mass of double bis (A propylene glycol glycidyl) ether type liquid epoxy tree Rikaresin BPO-20, in addition to other The composite magnetic body of Example 20 was obtained in the same manner as in Example 16. Here, when the obtained sheet-shaped composite magnetic system was separated from the PET film by 323724 101 201230083, the sheet-shaped composite magnetic body was not damaged. The porosity of the composite magnetic body is 8.9. The real part of the complex dielectric constant is 28.9. The porosity of the composite magnetic body is 9.5. It is 12%. [Example 21] Using the orienting device 21 shown in Fig. 4, the formed body sheet was conveyed at a speed of 2 m/min and a magnetic field of 900 Gauss was applied to the formed body sheet instead of the horizontally oriented sheet. A composite magnetic body of Example 21 was obtained by the same operation as in Example 16 except that a magnetic field of 900 gauss was applied for 6 minutes. Here, when the obtained sheet-shaped composite magnetic body was peeled off from the PET film, the sheet-shaped composite magnetic body was not damaged. Then, the magnetic properties and the porosity of the composite magnetic material were measured in the same manner as in Example 16. As a result, the real part of the complex magnetic permeability at 200 MHz was /r, which was a solid dielectric constant of 7·3'. The portion e r ' is 22.8, and the porosity is 19%. [Example 22] Using the orienting device 31 shown in Fig. 5, a formed body sheet was conveyed at a speed of 2 m/min, and a magnetic field of 300 Gauss was applied to each pair of magnets in place of the formed body sheet in the horizontal direction. The composite magnetic body of Example 22 was obtained by the same operation as in Example 16 except that a magnetic field of 900 gauss was applied for 6 minutes. Here, when the obtained sheet-shaped composite magnetic body is peeled off from the PET film, the sheet-shaped composite magnetic body is not damaged. 102 323724 201230083 Ash, then, the magnetic properties and the porosity of the composite magnetic body were measured in the same manner as in Example 16. The result was the complex dielectric constant of the complex magnetic permeability of the composite magnetic body at 2q·. The real part e ^ is 3〇. 4, and the porosity is 19%. [Example 23] ― system = 40-mass liquid epoxy resin Rik (10), such as foot _2 〇 mixed with one% pentene type epoxy resin epicl 〇 n Hp_72 〇〇 L, in place of the mixed mass% of the liquid The composite magnetic body of Example 23 was obtained by the same operation as in Example 16 except that the epoxy resin Rikaresin BPO_20 was used. Here, when the obtained sheet-shaped composite magnetic body is peeled off from the PET film, the sheet-shaped composite magnetic body is not damaged. Next, the magnetic properties and the porosity of the composite magnetic body are measured, and the real part of the complex magnetic permeability at the 200 MHz is 7.5, and the real part ε r' of the complex permittivity is 23.9. The porosity was 9%. [Example 24] The same procedure as in Example 21 was carried out except that the liquid epoxy resin Rikaresin BPO-20 was mixed with the dicyclopentadiene type epoxy resin EPICLON HP-7200L'. 24 composite magnetic body. Here, when the obtained sheet-shaped composite magnetic material is peeled off from the PET film, it is not completely peeled off and is broken, and a sheet-shaped composite magnetic body of 丨00 mm x 2 mmx 〇.1 mm cannot be obtained. Subsequently, the fragment of the damaged composite magnetic material was subjected to a curing reaction for 2 hours at 160 ° C. The magnetic properties and porosity of the obtained fragment-like composite 103 323724 201230083 magnetic material were measured in the same manner as in Example 18, and the result was a composite. The real part of the complex magnetic permeability at 2 〇〇MHz is 7.0, the real part of the complex permittivity is εΓ, which is 32.4, and the porosity is 26%. [Example 25] Flat magnetic particles (Ni 76% by mass - Fe 20% by mass - Zn4 mass / 〇 dispersed in epoxy resin) having an average thickness of 19.19#ιη, an average major axis of 1.63/zm, and an average aspect ratio of 8.6 A molding material is obtained in the mold, and the obtained molding material is molded in a mold and thermally cured to obtain a composite magnetic body. The composite magnetic body is coated on the antenna conductor at a thickness of 1.7 mm to produce a pattern of Fig. 16 a quadrilateral columnar monopole antenna. When the antenna length is set to 200 mm, resonance occurs at 180 MHz, and when the antenna length δ is shorter than 200 mm, resonance occurs at a frequency of 180 MHz or more, and the antenna length is obtained. When set to 180 ,, resonance occurs at 200 MHz. The average gain of the antenna in the XZ plane in Fig. 16A is _5. 5 dBd. The real part of the complex magnetic permeability of the composite magnetic body Vr, and the loss tangent tan (The measurement result of 5 # is shown in Fig. 26. The obtained composite magnetic body has a real part of the complex magnetic permeability of 16 〇 to 222 MHz, which is 6 or more, and the loss of the complex magnetic permeability is 乜 11 β from It is below 0.05. [Embodiment 2 6] In Example 2, except for The monopole antenna of Example 26 was produced in the same manner except that the coating thickness of the magnetic material was 2. 5 mm. The monopole antenna was produced at 12 〇mjjz when the antenna length was set to 2 〇〇 mm. When the resonance 'sets the length of the antenna to be shorter than 200 mm, resonance occurs at a frequency of 120 MHz or more' when it is set to 150_, and resonance occurs at 200 MHz. The average gain of the antenna 104 323724 201230083 on the xz plane is _6.5 dBd. Example 27] Flat magnetic particles (Ni 76% by mass-Fe 20% by mass-Zn4) having an average thickness of 35.35//m, an average major axis of 2.49/m, and an average aspect ratio of 7.3.

Berry%) is dispersed in an epoxy resin to obtain a shaped material. This molding material is placed in a mold &amp; L to be molded and thermally cured to obtain a composite magnetic body. The read composite magnetic body is coated around the rod antenna conductor with a thickness of 2.5 mm.

The four-corner cylindrical monopole antenna shown in Fig. 16 is produced in Fig. 16 &amp; ^ L _ ^ α. In the case of the monopole antenna, when the antenna length is 200 mm, resonance occurs at 197 MHz. When the antenna length is shorter than 200 mm, resonance occurs at a frequency of 197 MHz or more, and when it is 195 mm, resonance occurs at 2 GG MHz. The average gain on the Z plane is -5.0 dBn. The composite body of the complex magnetic body at 160 to 222 MHz has a real part &quot;r, which is 3 or more, and the loss tangent of the complex enthalpy tan is tan (5 〆 is 〇. 03. [Example 28] Example 25 In the above, the monopole antenna of the twenty-eighth embodiment was produced in the same manner except that the coating thickness of the composite magnetic material was set to 〇. 8_. § The unipolar day and the wire 胄 when the antenna length was set to $mm, At 230 MHz, eight resonances are generated. In order to generate resonance at a frequency below 222 mhz, the antenna length must be «200 mm or more, and when the antenna length is 22 〇mm, resonance occurs at 200 MHz. [Embodiment 29] Example 27 + except for composite magnetic The monopole antenna of Example 29 was produced in the same manner except that the coating thickness of the body was set to 1.7 mm. 323724 105 201230083 shai monopole antenna, when the antenna length is set to 2 〇〇 mm, resonance occurs at 236 mHz. In order to generate resonance at a frequency below 222 MHz, the length of the antenna must not be 200 mra or more, and when the length of the antenna is 23 〇mm, resonance occurs at 2 〇〇 mhz. Next, the monopole antenna shown in Fig. 16A is used as a model. The real part of the complex permeability vr'=3, tan(5 “=〇 a composite magnetic body of 2 to cover a monopole antenna of an antenna conductor, and a monopole antenna of an antenna conductor coated with a composite magnetic body of #r,=6, tan〇=().〇2, by an electromagnetic field simulator HFSS The relationship between the coating thickness of the composite magnetic body and the minimum antenna length at which resonance occurs at 2 〇〇 MHz is calculated. In Fig. 27, the calculation results are shown by straight lines. The results of the above respective examples and reference examples are also at the 27th. In the figure, the dot is green. As shown in Fig. 27, since the measured value and the calculated value are almost identical on the straight line, it is found that the real part of the complex magnetic permeability is a composite magnetic of r, = 3 and 6. The coating of the body is such that the length of the antenna conductor is 2 mm or less, and in order to resonate at a frequency of 200 MHz or less, the thickness of the coating must be 24 mm or 1.2 mm or more. [Simplified description of the drawing] Fig. 1 shows the use of the opening The container is a diagram in which a slurry containing spherical magnetic particles and a dispersion medium are stirred at a high speed. Fig. 2 is a view showing a state in which a slurry containing spherical magnetic particles and a dispersion medium are subjected to high-speed scrambling using a closed container. Figure 3 shows the display A schematic diagram of an orientation apparatus for carrying out the orientation method A of the present invention. 106 323724 201230083 FIG. 4 is a schematic configuration diagram showing an orientation apparatus for carrying out the orientation method B of the present invention. FIG. 5 is a diagram showing the implementation of the present invention. A schematic diagram of the orientation device of the orientation method C. Fig. 6 is a schematic view showing the operation of the orientation device for implementing the orientation method C of the present invention. Fig. 7 is a diagram showing the orientation of the orientation method D for implementing the present invention. A schematic diagram of the device. Fig. 8 is a view showing a power supply method of a monopole antenna which is an example of an antenna according to an embodiment of the present invention. Fig. 9 is a perspective view showing an example of a mobile phone of a communication device according to an embodiment of the present invention. Fig. 10 is a perspective view showing another example of a mobile phone of the communication device according to the embodiment of the present invention. Fig. 11 is a perspective view showing another example of a mobile phone of the communication device according to the embodiment of the present invention. Fig. 12 is a perspective view showing another example of a mobile phone of the communication device according to the embodiment of the present invention. Fig. 13 is a perspective view showing an example of a mobile phone with a protective cover of a communication device according to an embodiment of the present invention. Fig. 14 is a plan view showing another example of a mobile phone to which a communication device according to an embodiment of the present invention is attached. Fig. 15 is a cross-sectional view taken along line a - A of Fig. 14. Fig. 16 is a view showing the structure of a monopole antenna of the present embodiment and an electrical method for 323724 107 201230083. Fig. 16B is a cross-sectional view taken along the line A. to A of Fig. 16a. Fig. 17 is a view showing the complex magnetic permeability and loss tangent of the composite magnetic body of Example 1 of the present invention. Fig. 18 is a scanning electron microscope (SEM) image showing the constitution of the composite magnetic body of Example 1 of the present invention. Fig. 19 is a graph showing the complex magnetic permeability and the tangent tangent of the composite magnetic body of Comparative Example 1. Fig. 20 is a scanning electron microscope (SEM) image showing the structure of the composite magnetic body of Comparative Example 1. Fig. 21 is a view showing the real part / / r' of the complex magnetic permeability and the loss tangent tan 5 # of the complex magnetic permeability of the composite magnetic body of Example 3 of the present invention. Fig. 22 is a view showing the real part ε r' of the complex permittivity and the loss tangent tan &lt; 5 ε of the complex permittivity of the composite magnetic body of Example 3 of the present invention. Fig. 23 is a view showing the real part /zr' of the complex magnetic permeability and the loss tangent tan 5 复 of the complex magnetic permeability of the composite magnetic body of Example 4 of the present invention. Fig. 24 is a view showing the real part ε r' of the complex permittivity and the loss tangent tan δ ε of the complex permittivity of the composite magnetic body of Example 4 of the present invention. Figure 25 is a diagram showing the real part /zr' of the complex magnetic permeability and the loss tangent tan 5 # of the complex magnetic permeability in the frequency band of 10 108 323724 201230083 to 1000 MHz of the composite magnetic body of Example I8 of the present invention. . Fig. 26 is a view showing the real part /w of the complex magnetic permeability at each frequency of the composite magnetic body of Example 25 and the loss tangent tan 5 of the complex magnetic permeability. Fig. 27 is a view showing the relationship between the coating thickness of the composite magnetic body and the length of the antenna in which resonance occurs. [Description of main component symbols] 1 Base 2 Coating film 11, 21, 31, 51 Orientation device 12 Coating means 13a, 13b, 22, 22a, 22b, 32a, 32b, 33a, 33b, 34a, 34b Magnet 14, 52 Drying means 41 flat magnetic particles 61, 74, 85, 1620 monopole antennas 62, 75, 87, 95, 106, 122, 142, 1622 antenna conductors 63, 76, 88, 96, 105, 123, 143, 1621. Composite magnetic body 64, 93, 103, 1624 Base plate 65, 1626 Connection portion 66, 1625 AC signal transmitter 71, 81, 91, HH, 112, 132 Mobile phone 72, 82, 92, 102, 114, 134 Frame 73 , 83, 115, 135 Display parts 84, 116, 136 External antenna terminals 86, 124, 144 Connection terminal 94 L-shaped antenna 104, 141 Spiral antenna 111 ' 131 Mobile phone 113, 133 with protective cover Protective cover 121 Dipole antenna 109 323724 201230083 151 Open container 152 Spherical magnetic particles 153 Slurry 154 Dispersion medium 155 Single-axis rotating body 1511 Closed container Η, HI, H2 Magnetic field line g Direction of travel 110 323724

Claims (1)

201230083 VII. Patent application scope: Insulation, complex δ magnetic J·batter, which is obtained by dispersing flat magnetic particles in a material, and the average thickness of the flat magnetic particles is 〇〇1em or more and 5# m or less. 'The average long diameter is 0. 05# ra or more and 10# m or less, and the average aspect ratio (long diameter/thickness) is 5 or more. 2. The composite magnetic body according to claim 1, wherein the real part of the complex magnetic permeability in the frequency band of 70 MHz to 500 MHz is greater than 1, and the loss tangent tanS of the complex magnetic permeability is 0. 1 or less. 3. The composite magnetic body according to claim 1, wherein the real part of the complex magnetic permeability in the frequency band of 7 至 to 500 MHz is r, greater than 7, and the loss tangent of the complex magnetic permeability is tan 5 β is 0.1 or less. 4. The composite magnetic body according to claim 1, wherein the real part of the complex magnetic permeability in the frequency band of 70 MHz to 500 MHz is greater than 1 〇, and the loss tangent tand # of the complex magnetic permeability is 0· 1 below. 5. The composite magnetic body according to claim 1, wherein the flat magnetic particles are selected from the group consisting of lead (A1), chromium (Cr), manganese (Mn), cobalt (C〇), and steel. An iron-nickel alloy of one or two or more metal elements of (Cu), zinc (zn), niobium (Nb), copper (Mo), indium (In), and tin (Sn). 6. The composite magnetic body according to claim 1, wherein the flat magnetic particles are subjected to mechanical stress by a spherical magnetic particle having an average particle diameter of 0.5/zm or less to cause the ball. The magnetic particles are deformed and 'fused together. 1 323724 201230083 7. The composite magnetic body according to claim 1, wherein the real part of the complex magnetic permeability in the frequency band of 90 MHz to 220 MHz/zr' is greater than 1, and the loss of the complex magnetic permeability tangent tan &lt;; 5 # is 0. 05 or less. 8. The composite magnetic body according to claim 1, wherein the porosity is 20% or less. 9. The composite magnetic body according to claim 8, wherein the real part of the complex magnetic permeability in the frequency band of 70 MHz to 500 MHz is 7 or more, and the real part of the complex dielectric constant ε r ' 5以上以下以下。 (/ / r ' · ε r ') M / 2 is 0. 1 or less, (y r ' / ε r ') 1/2 is 0.5 or more and 1 or less. 10. The composite magnetic body according to claim 9, wherein the loss of the complex magnetic permeability of the frequency band of 70 MHz to 500 MHz is tan &lt;5 # is 0.05 or less, and the loss of the complex dielectric constant tangent tan &lt;;5 ε is 0.1 or less. The composite magnetic material according to claim 1, wherein the insulating material contains a first resin having a cyclic structure and a functional group polymerized in a monomer unit. 12. The composite magnetic body according to claim 11, wherein the resin is a thermosetting resin. 13. The composite magnetic body according to claim 11, wherein the resin is an epoxy resin. 14. The composite magnetic body according to claim 11, wherein the resin is a dicyclopentadiene type epoxy resin. The composite magnetic body according to claim 11, wherein an orientation direction of the resin in the flat magnetic particle is an angle formed by a longitudinal direction of the plate-shaped magnetic particle of the flat 2 323 724 201230083 It is 20° or less. 16. The composite magnetic body according to claim 11, wherein the real part #r' of the complex magnetic permeability in the frequency band of 70 MHz to 500 MHz is 7 or more. 17. The composite magnetic material according to claim 11, further comprising a second resin which imparts flexibility to the first resin. 18. The composite magnetic material according to claim 17, wherein the second resin is an epoxy resin having at least one of a bisphenol A type skeleton and a bisphenol F type skeleton. 19. The composite magnetic material according to claim 17, wherein the second resin is an epoxy resin having two or more epoxy groups in one molecule and having an ether skeleton. 20. The composite magnetic material according to claim 17, wherein the second resin is an epoxy having any one of a propylene glycol addition bisphenol A type skeleton and an ethylene glycol addition bisphenol A type skeleton. Resin. 21. The composite magnetic body according to claim 17, wherein the real part /zr' of the complex magnetic permeability in the frequency band of 70 MHz to 500 MHz is 7 or more. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The slurry and the dispersion medium in which the spherical magnetic particles are dispersed in the solution containing the surfactant are filled in the sealable container, so that the volume of the slurry and the dispersion medium is 3,323,724,300,300,300, and the volume of the container a first step in which the volume is the same, and the slurry is stirred together with the dispersion medium to deform and melt the spherical magnetic particles to form flat magnetic particles. The flat magnetic particles are dispersed. a second step of forming a molding material in a solution obtained by dissolving an insulating material in a solvent; and a molding step of forming or coating the molding material on a substrate to obtain a molded body, and The third step of the drying/hardening step of the shaped body drying/hardening. The method of producing a composite magnetic material according to claim 22, wherein the insulating material is a resin having a cyclic structure and having a functional group polymerized in a monomer unit. The method of producing a composite magnetic material according to claim 22, wherein in the third step, after the molding step, a magnetic field is applied to the obtained molded body to cause the molded body to be in the molded body. The orientation step of aligning the planar magnetic particles into one direction is followed by the aforementioned drying/hardening step. A type of antenna comprising the composite magnetic body according to any one of claims 1 to 21. 26. A communication device comprising an antenna as described in claim 25 of the patent application. 27. A monopole antenna, the antenna conductor being covered by a composite magnetic body as described in claim 1 of the patent application. 28. The monopole antenna according to claim 27, wherein the real part # I·' of the complex magnetic permeability of the 4 323 724 201230083 composite magnetic body in the frequency band of 160 MHz to 222 MHz is 3 or more. The singularity of the composite magnetic body is 2. 4 mm or more and 10 Å or less. The monopole antenna according to claim 27, wherein the composite magnetic body has a real part #r' of a complex magnetic permeability of 6 or more in a frequency band of 160 MHz to 222 MHz. The thickness of the composite magnetic body is 1. 2 mm or more and 10 mm or less, as described in the above-mentioned. The monopole antenna according to claim 27, wherein the length of the antenna conductor is 200 mm or less. 5 323724