CN1044044C - 基于波动磁阻的磁阻传感器及磁阻感测系统 - Google Patents
基于波动磁阻的磁阻传感器及磁阻感测系统 Download PDFInfo
- Publication number
- CN1044044C CN1044044C CN92100326A CN92100326A CN1044044C CN 1044044 C CN1044044 C CN 1044044C CN 92100326 A CN92100326 A CN 92100326A CN 92100326 A CN92100326 A CN 92100326A CN 1044044 C CN1044044 C CN 1044044C
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- China
- Prior art keywords
- magnetic
- layer
- resistance
- thickness
- sandwich construction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000005291 magnetic effect Effects 0.000 claims abstract description 102
- 239000003302 ferromagnetic material Substances 0.000 claims abstract description 22
- 239000000758 substrate Substances 0.000 claims abstract description 19
- 239000000696 magnetic material Substances 0.000 claims abstract description 16
- 239000007769 metal material Substances 0.000 claims abstract 2
- 239000000463 material Substances 0.000 claims description 59
- 239000010949 copper Substances 0.000 claims description 39
- 238000010276 construction Methods 0.000 claims description 22
- 229910052802 copper Inorganic materials 0.000 claims description 18
- 229910052707 ruthenium Inorganic materials 0.000 claims description 13
- 229910052742 iron Inorganic materials 0.000 claims description 11
- 239000000126 substance Substances 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 claims description 8
- 229910052741 iridium Inorganic materials 0.000 claims description 8
- 229910052702 rhenium Inorganic materials 0.000 claims description 8
- 229910003266 NiCo Inorganic materials 0.000 claims description 7
- 229910052804 chromium Inorganic materials 0.000 claims description 7
- 229910052703 rhodium Inorganic materials 0.000 claims description 7
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 8
- 239000010948 rhodium Substances 0.000 claims 6
- 239000011651 chromium Substances 0.000 claims 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims 1
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 claims 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims 1
- 239000010410 layer Substances 0.000 description 68
- 229920006395 saturated elastomer Polymers 0.000 description 13
- 230000005294 ferromagnetic effect Effects 0.000 description 9
- 230000008859 change Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000011229 interlayer Substances 0.000 description 4
- 238000003475 lamination Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000005290 antiferromagnetic effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y25/00—Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
- G01R33/09—Magnetoresistive devices
- G01R33/093—Magnetoresistive devices using multilayer structures, e.g. giant magnetoresistance sensors
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
- G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
- G11B5/3903—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects using magnetic thin film layers or their effects, the films being part of integrated structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F10/00—Thin magnetic films, e.g. of one-domain structure
- H01F10/32—Spin-exchange-coupled multilayers, e.g. nanostructured superlattices
- H01F10/324—Exchange coupling of magnetic film pairs via a very thin non-magnetic spacer, e.g. by exchange with conduction electrons of the spacer
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N50/00—Galvanomagnetic devices
- H10N50/80—Constructional details
- H10N50/85—Magnetic active materials
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
- G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
- G11B2005/3996—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects large or giant magnetoresistive effects [GMR], e.g. as generated in spin-valve [SV] devices
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Nanotechnology (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Hall/Mr Elements (AREA)
- Measuring Magnetic Variables (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Magnetic Heads (AREA)
Abstract
Description
Claims (32)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US65356791A | 1991-02-08 | 1991-02-08 | |
US653,567 | 1991-02-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1063960A CN1063960A (zh) | 1992-08-26 |
CN1044044C true CN1044044C (zh) | 1999-07-07 |
Family
ID=24621406
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN92100326A Expired - Fee Related CN1044044C (zh) | 1991-02-08 | 1992-01-21 | 基于波动磁阻的磁阻传感器及磁阻感测系统 |
Country Status (10)
Country | Link |
---|---|
US (1) | US5341118A (zh) |
EP (1) | EP0498640A3 (zh) |
JP (1) | JP2612988B2 (zh) |
KR (1) | KR960001289B1 (zh) |
CN (1) | CN1044044C (zh) |
BR (1) | BR9200322A (zh) |
CA (1) | CA2060561C (zh) |
MY (1) | MY108176A (zh) |
SG (1) | SG42852A1 (zh) |
TW (1) | TW211077B (zh) |
Families Citing this family (62)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5341261A (en) * | 1991-08-26 | 1994-08-23 | International Business Machines Corporation | Magnetoresistive sensor having multilayer thin film structure |
JPH06220609A (ja) * | 1992-07-31 | 1994-08-09 | Sony Corp | 磁気抵抗効果膜及びその製造方法並びにそれを用いた磁気抵抗効果素子、磁気抵抗効果型磁気ヘッド |
US5549978A (en) * | 1992-10-30 | 1996-08-27 | Kabushiki Kaisha Toshiba | Magnetoresistance effect element |
FR2698965B1 (fr) * | 1992-12-03 | 1995-01-06 | Commissariat Energie Atomique | Structure et capteur magnétiques multicouches à forte magnétorésistance et procédé de fabrication de la structure. |
JP2871990B2 (ja) * | 1993-02-16 | 1999-03-17 | 日本電気株式会社 | 磁気抵抗効果素子薄膜 |
US5736921A (en) * | 1994-03-23 | 1998-04-07 | Sanyo Electric Co., Ltd. | Magnetoresistive element |
US5585198A (en) * | 1993-10-20 | 1996-12-17 | Sanyo Electric Co., Ltd. | Magnetorsistance effect element |
JP2629583B2 (ja) * | 1993-05-13 | 1997-07-09 | 日本電気株式会社 | 磁気抵抗効果膜およびその製造方法 |
DE4425356C2 (de) * | 1993-09-29 | 1998-07-02 | Siemens Ag | Magnetoresistiver Sensor unter Verwendung eines Sensormaterials mit perowskitähnlicher Kristallstruktur |
US5475304A (en) * | 1993-10-01 | 1995-12-12 | The United States Of America As Represented By The Secretary Of The Navy | Magnetoresistive linear displacement sensor, angular displacement sensor, and variable resistor using a moving domain wall |
US5549977A (en) * | 1993-11-18 | 1996-08-27 | Lucent Technologies Inc. | Article comprising magnetoresistive material |
DE69511145T2 (de) * | 1994-03-09 | 2000-02-03 | Eastman Kodak Co., Rochester | Magnetoresistiver Wiedergabekopf mit doppeltem Spin-Ventilelement |
US5695858A (en) * | 1994-03-23 | 1997-12-09 | Sanyo Electric Co., Ltd. | Magnetoresistive element |
JP2616561B2 (ja) * | 1994-07-05 | 1997-06-04 | 日本電気株式会社 | 磁気抵抗効果素子薄膜及びそれを用いた磁気抵抗効果素子 |
JPH0849062A (ja) * | 1994-08-04 | 1996-02-20 | Sanyo Electric Co Ltd | 磁気抵抗効果膜 |
JPH08130337A (ja) * | 1994-09-09 | 1996-05-21 | Sanyo Electric Co Ltd | 磁気抵抗素子及びその製造方法 |
US5434826A (en) * | 1994-09-26 | 1995-07-18 | Read-Rite Corporation | Multilayer hard bias films for longitudinal biasing in magnetoresistive transducer |
US5552778A (en) * | 1994-11-23 | 1996-09-03 | International Business Machines Corporation | Multibit bimorph magnetic tags using acoustic or magnetic interrogation for identification of an object coupled thereto |
US5585986A (en) * | 1995-05-15 | 1996-12-17 | International Business Machines Corporation | Digital magnetoresistive sensor based on the giant magnetoresistance effect |
JPH0950613A (ja) * | 1995-08-03 | 1997-02-18 | Sony Corp | 磁気抵抗効果素子及び磁界検出装置 |
US7002475B2 (en) * | 1997-12-31 | 2006-02-21 | Intermec Ip Corp. | Combination radio frequency identification transponder (RFID tag) and magnetic electronic article surveillance (EAS) tag |
US5812065A (en) | 1995-08-14 | 1998-09-22 | International Business Machines Corporation | Modulation of the resonant frequency of a circuit using an energy field |
US7123129B1 (en) | 1995-08-14 | 2006-10-17 | Intermec Ip Corp. | Modulation of the resonant frequency of a circuit using an energy field |
US5657191A (en) * | 1995-09-18 | 1997-08-12 | Read-Rite Corporation | Stabilization of giant magnetoresistive transducers |
JPH09205234A (ja) * | 1996-01-26 | 1997-08-05 | Nec Corp | 磁気抵抗効果素子及び磁気抵抗効果センサ |
US5627704A (en) * | 1996-02-12 | 1997-05-06 | Read-Rite Corporation | Thin film giant magnetoresistive CPP transducer with flux guide yoke structure |
US6590750B2 (en) | 1996-03-18 | 2003-07-08 | International Business Machines Corporation | Limiting magnetoresistive electrical interaction to a preferred portion of a magnetic region in magnetic devices |
US6166539A (en) * | 1996-10-30 | 2000-12-26 | Regents Of The University Of Minnesota | Magnetoresistance sensor having minimal hysteresis problems |
US5747997A (en) * | 1996-06-05 | 1998-05-05 | Regents Of The University Of Minnesota | Spin-valve magnetoresistance sensor having minimal hysteresis problems |
US5945904A (en) * | 1996-09-06 | 1999-08-31 | Ford Motor Company | Giant magnetoresistors with high sensitivity and reduced hysteresis and thin layers |
US5666248A (en) * | 1996-09-13 | 1997-09-09 | International Business Machines Corporation | Magnetizations of pinned and free layers of a spin valve sensor set by sense current fields |
US5731936A (en) * | 1996-09-26 | 1998-03-24 | International Business Machines Corporation | Magnetoresistive (MR) sensor with coefficient enhancing that promotes thermal stability |
US5936400A (en) * | 1996-12-23 | 1999-08-10 | Federal Products Co. | Magnetoresistive displacement sensor and variable resistor using a moving domain wall |
US5976681A (en) * | 1997-06-30 | 1999-11-02 | Ford Global Technologies, Inc. | Giant magnetoresistors with high sensitivity and reduced hysteresis |
US5966012A (en) * | 1997-10-07 | 1999-10-12 | International Business Machines Corporation | Magnetic tunnel junction device with improved fixed and free ferromagnetic layers |
US6337215B1 (en) | 1997-12-01 | 2002-01-08 | International Business Machines Corporation | Magnetic particles having two antiparallel ferromagnetic layers and attached affinity recognition molecules |
US5920446A (en) * | 1998-01-06 | 1999-07-06 | International Business Machines Corporation | Ultra high density GMR sensor |
US5946228A (en) * | 1998-02-10 | 1999-08-31 | International Business Machines Corporation | Limiting magnetic writing fields to a preferred portion of a changeable magnetic region in magnetic devices |
US6072718A (en) * | 1998-02-10 | 2000-06-06 | International Business Machines Corporation | Magnetic memory devices having multiple magnetic tunnel junctions therein |
US6104633A (en) * | 1998-02-10 | 2000-08-15 | International Business Machines Corporation | Intentional asymmetry imposed during fabrication and/or access of magnetic tunnel junction devices |
JP2925542B1 (ja) * | 1998-03-12 | 1999-07-28 | ティーディーケイ株式会社 | 磁気抵抗効果膜および磁気抵抗効果型ヘッド |
US6197439B1 (en) | 1999-01-28 | 2001-03-06 | International Business Machines Corporation | Laminated magnetic structures with ultra-thin transition metal spacer layers |
US6153320A (en) * | 1999-05-05 | 2000-11-28 | International Business Machines Corporation | Magnetic devices with laminated ferromagnetic structures formed with improved antiferromagnetically coupling films |
US6208491B1 (en) * | 1999-05-26 | 2001-03-27 | International Business Machines Corporation | Spin valve with improved capping layer structure |
US6538843B1 (en) | 1999-11-09 | 2003-03-25 | Matsushita Electric Industrial Co., Ltd. | Magnetic head |
US6639763B1 (en) | 2000-03-15 | 2003-10-28 | Tdk Corporation | Magnetic transducer and thin film magnetic head |
US6738234B1 (en) | 2000-03-15 | 2004-05-18 | Tdk Corporation | Thin film magnetic head and magnetic transducer |
US6603642B1 (en) | 2000-03-15 | 2003-08-05 | Tdk Corporation | Magnetic transducer having a plurality of magnetic layers stacked alternately with a plurality of nonmagnetic layers and a fixed-orientation-of-magnetization layer and thin film magnetic head including the magnetic transducer |
WO2001071713A1 (en) * | 2000-03-22 | 2001-09-27 | Nve Corporation | Read heads in planar monolithic integrated circuit chips |
JP3474523B2 (ja) | 2000-06-30 | 2003-12-08 | Tdk株式会社 | 薄膜磁気ヘッドおよびその製造方法 |
US6518588B1 (en) | 2001-10-17 | 2003-02-11 | International Business Machines Corporation | Magnetic random access memory with thermally stable magnetic tunnel junction cells |
US6669983B2 (en) | 2001-10-25 | 2003-12-30 | Tdk Corporation | Manufacturing method of thin-film magnetic head with magnetoresistive effect element |
JP2003324225A (ja) * | 2002-04-26 | 2003-11-14 | Nec Corp | 積層フェリ型磁性薄膜並びにそれを使用した磁気抵抗効果素子及び強磁性トンネル素子 |
US6775183B2 (en) * | 2002-10-22 | 2004-08-10 | Btg International Ltd. | Magnetic memory device employing giant magnetoresistance effect |
US6639830B1 (en) | 2002-10-22 | 2003-10-28 | Btg International Ltd. | Magnetic memory device |
JP3695459B2 (ja) * | 2003-10-30 | 2005-09-14 | Tdk株式会社 | 薄膜磁気ヘッドの製造方法 |
US7221545B2 (en) * | 2004-02-18 | 2007-05-22 | Hitachi Global Storage Technologies Netherlands B.V. | High HC reference layer structure for self-pinned GMR heads |
US7190560B2 (en) | 2004-02-18 | 2007-03-13 | Hitachi Global Storage Technologies Netherlands B.V. | Self-pinned CPP sensor using Fe/Cr/Fe structure |
US8068315B2 (en) * | 2007-09-26 | 2011-11-29 | Hitachi Global Storage Technologies Netherlands B.V. | Current perpendicular to plane GMR and TMR sensors with improved magnetic properties using Ru/Si seed layers |
TWI452319B (zh) * | 2012-01-09 | 2014-09-11 | Voltafield Technology Corp | 磁阻感測元件 |
JP2015060970A (ja) * | 2013-09-19 | 2015-03-30 | 株式会社東芝 | 磁気抵抗素子および磁気メモリ |
US10620279B2 (en) * | 2017-05-19 | 2020-04-14 | Allegro Microsystems, Llc | Magnetoresistance element with increased operational range |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0288766A2 (en) * | 1987-04-28 | 1988-11-02 | International Business Machines Corporation | Magnetoresistive sensor with improved antiferromagnetic film |
EP0288765A2 (en) * | 1987-04-28 | 1988-11-02 | International Business Machines Corporation | Magnetoresistive sensor with mixed phase antiferromagnetic film |
EP0372420A2 (en) * | 1988-12-02 | 1990-06-13 | Hitachi, Ltd. | Magnetic recording-reproducing apparatus and magnetoresistive head for use therewith |
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US3818328A (en) * | 1969-09-30 | 1974-06-18 | Siemens Ag | Ferromagnetic heterojunction diode |
FR2165206A5 (zh) * | 1971-12-22 | 1973-08-03 | Cii | |
US3898359A (en) * | 1974-01-15 | 1975-08-05 | Precision Electronic Component | Thin film magneto-resistors and methods of making same |
US4141051A (en) * | 1977-10-11 | 1979-02-20 | U.S. Philips Corporation | Variable dynamic range magneto-resistive head |
NL8101962A (nl) * | 1981-04-22 | 1982-11-16 | Philips Nv | Magnetische sensor. |
US4663684A (en) * | 1984-01-27 | 1987-05-05 | Hitachi, Ltd. | Magnetic transducer using magnetoresistance effect |
US4604176A (en) * | 1984-03-30 | 1986-08-05 | Sperry Corporation | Method of improving magnetoresistive effect in thin magnetic film |
JPS60251682A (ja) * | 1984-05-29 | 1985-12-12 | Hitachi Ltd | 磁気抵抗効果型素子 |
WO1989007746A1 (en) * | 1988-02-11 | 1989-08-24 | Garshelis Ivan J | Magnetic position sensor |
JPH01217283A (ja) * | 1988-02-25 | 1989-08-30 | Fujitsu Ltd | 単方向磁界検出用磁気抵抗素子 |
US4912451A (en) * | 1988-03-28 | 1990-03-27 | Nippon Soken, Inc. | Heterojunction magnetic field sensor |
DE3820475C1 (zh) * | 1988-06-16 | 1989-12-21 | Kernforschungsanlage Juelich Gmbh, 5170 Juelich, De | |
JPH0223681A (ja) * | 1988-07-12 | 1990-01-25 | Nec Corp | 磁気抵抗効果素子 |
JPH0225777A (ja) * | 1988-07-15 | 1990-01-29 | Hitachi Ltd | 感磁素子 |
US5206590A (en) * | 1990-12-11 | 1993-04-27 | International Business Machines Corporation | Magnetoresistive sensor based on the spin valve effect |
-
1992
- 1992-01-08 MY MYPI92000035A patent/MY108176A/en unknown
- 1992-01-15 KR KR1019920000457A patent/KR960001289B1/ko not_active IP Right Cessation
- 1992-01-20 TW TW081100373A patent/TW211077B/zh active
- 1992-01-21 CN CN92100326A patent/CN1044044C/zh not_active Expired - Fee Related
- 1992-01-31 BR BR929200322A patent/BR9200322A/pt active Search and Examination
- 1992-02-03 CA CA002060561A patent/CA2060561C/en not_active Expired - Fee Related
- 1992-02-03 JP JP4017535A patent/JP2612988B2/ja not_active Expired - Fee Related
- 1992-02-05 EP EP19920300981 patent/EP0498640A3/en not_active Ceased
- 1992-02-05 SG SG1996000144A patent/SG42852A1/en unknown
-
1993
- 1993-05-06 US US08/060,462 patent/US5341118A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0288766A2 (en) * | 1987-04-28 | 1988-11-02 | International Business Machines Corporation | Magnetoresistive sensor with improved antiferromagnetic film |
EP0288765A2 (en) * | 1987-04-28 | 1988-11-02 | International Business Machines Corporation | Magnetoresistive sensor with mixed phase antiferromagnetic film |
EP0372420A2 (en) * | 1988-12-02 | 1990-06-13 | Hitachi, Ltd. | Magnetic recording-reproducing apparatus and magnetoresistive head for use therewith |
Also Published As
Publication number | Publication date |
---|---|
KR920017027A (ko) | 1992-09-26 |
SG42852A1 (en) | 1997-10-17 |
CA2060561A1 (en) | 1992-08-09 |
CA2060561C (en) | 1998-05-05 |
US5341118A (en) | 1994-08-23 |
KR960001289B1 (ko) | 1996-01-25 |
MY108176A (en) | 1996-08-30 |
TW211077B (zh) | 1993-08-11 |
JP2612988B2 (ja) | 1997-05-21 |
BR9200322A (pt) | 1992-10-13 |
CN1063960A (zh) | 1992-08-26 |
EP0498640A3 (en) | 1993-10-13 |
EP0498640A2 (en) | 1992-08-12 |
JPH04360009A (ja) | 1992-12-14 |
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