FR2517292B1 - Procede de preparation de a-feooh aciculaire pour une matiere d'enregistrement magnetique - Google Patents

Procede de preparation de a-feooh aciculaire pour une matiere d'enregistrement magnetique

Info

Publication number: FR2517292B1
Authority: FR; France
Prior art keywords: feooh; acicular; preparation; magnetic recording; recording material
Prior art date: 1981-11-27
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

Application number

FR8219987A

Other languages

English (en)

Other versions

FR2517292A1 (fr

Inventor

Nakata Kazuo

Ishikawa Tsuneo

Amamoto Taro

Kawamura Toshihiko

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Ishihara Sangyo Kaisha Ltd

Original Assignee

Ishihara Sangyo Kaisha Ltd

Priority date (The priority date 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 date listed.)

1981-11-27

Filing date

1982-11-29

Publication date

1988-09-30

1982-11-29 Application filed by Ishihara Sangyo Kaisha Ltd filed Critical Ishihara Sangyo Kaisha Ltd

1983-06-03 Publication of FR2517292A1 publication Critical patent/FR2517292A1/fr

1988-09-30 Application granted granted Critical

1988-09-30 Publication of FR2517292B1 publication Critical patent/FR2517292B1/fr

Status Expired legal-status Critical Current

Classifications

- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
- C01G49/06—Ferric oxide [Fe2O3]
- 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
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
- G11B5/70626—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances
- G11B5/70642—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides
- G11B5/70652—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides gamma - Fe2 O3
- G11B5/70663—Preparation processes specially adapted therefor, e.g. using stabilising agents
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/10—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
- H01F1/11—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/51—Particles with a specific particle size distribution
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/54—Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/42—Magnetic properties

Landscapes

Chemical & Material Sciences (AREA)
Organic Chemistry (AREA)
Inorganic Chemistry (AREA)
Engineering & Computer Science (AREA)
Power Engineering (AREA)
Hard Magnetic Materials (AREA)
Compounds Of Iron (AREA)

FR8219987A 1981-11-27 1982-11-29 Procede de preparation de a-feooh aciculaire pour une matiere d'enregistrement magnetique Expired FR2517292B1 (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
JP56190166A JPS5891039A (ja)	1981-11-27	1981-11-27	磁気記録材料用針状α−ＦｅＯＯＨの製造方法

Publications (2)

Publication Number	Publication Date
FR2517292A1 FR2517292A1 (fr)	1983-06-03
FR2517292B1 true FR2517292B1 (fr)	1988-09-30

Family

ID=16253523

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR8219987A Expired FR2517292B1 (fr)	1981-11-27	1982-11-29	Procede de preparation de a-feooh aciculaire pour une matiere d'enregistrement magnetique

Country Status (6)

Country	Link
US (1)	US4560544A (fr)
JP (1)	JPS5891039A (fr)
KR (1)	KR890000703B1 (fr)
DE (1)	DE3243868C2 (fr)
FR (1)	FR2517292B1 (fr)
GB (1)	GB2111471B (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS60255673A (ja) *	1984-01-31	1985-12-17	三菱マテリアル株式会社	酸窒化チタン焼結体の製造方法
DE3413752A1 (de) *	1984-04-12	1985-10-24	Basf Ag, 6700 Ludwigshafen	Verfahren zur herstellung isotroper magnetischer, kobalthaltiger eisenoxide
DE4310864A1 (de) *	1993-04-02	1994-10-06	Basf Ag	Verfahren zur Herstellung von transparenten Eisenoxid-Gelbpigmenten
KR960705740A (ko) *	1993-11-01	1996-11-08	워렌 리차드 보비	침철광 제조 방법(process for making goethite)
DE19601412C2 (de) *	1996-01-17	1999-07-22	Emtec Magnetics Gmbh	Ferromagnetische Pigmente
CN112340829A (zh) *	2020-10-26	2021-02-09	广东省科学院生态环境与土壤研究所	磷酸盐在促进绿锈活化分子氧中的应用

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR1357866A (fr) *	1963-03-29	1964-04-10	Basf Ag	Procédé pour la production d'oxyde de fer jaune alpha aciculaire, convenant notamment comme matière de départ pour la production d'oxyde de fer-iii-gamma hautement coercitif
FR1363027A (fr) *	1963-07-16	1964-06-05	Bayer Ag	Procédé de préparation d'oxyde ferrique gamma ferromagnétique
DE1592398A1 (de) *	1967-02-08	1970-12-17	Bayer Ag	Verwendung von hochkoerzitivem nadelfoermigem gamma-Fe2O3 zur Herstellung von Magnetogrammtraegern
GB1385777A (en) *	1971-05-06	1975-02-26	Bayer Ag	Magnetic iron oxides and a process for their production
JPS5854487B2 (ja) *	1977-08-29	1983-12-05	戸田工業株式会社	磁気記録材料用針状磁性酸化鉄粒子粉末の製造法
DE2815712A1 (de) *	1978-04-12	1979-10-25	Bayer Ag	Eisenoxide zur magnetischen signalaufzeichnung und verfahren zu deren herstellung

1981
- 1981-11-27 JP JP56190166A patent/JPS5891039A/ja active Granted
1982
- 1982-11-26 KR KR8205333A patent/KR890000703B1/ko active
- 1982-11-26 DE DE3243868A patent/DE3243868C2/de not_active Expired - Lifetime
- 1982-11-29 GB GB08233959A patent/GB2111471B/en not_active Expired
- 1982-11-29 FR FR8219987A patent/FR2517292B1/fr not_active Expired
1984
- 1984-12-10 US US06/680,241 patent/US4560544A/en not_active Expired - Lifetime

Also Published As

Publication number	Publication date
JPS6135135B2 (fr)	1986-08-11
GB2111471B (en)	1985-09-25
KR890000703B1 (ko)	1989-03-27
US4560544A (en)	1985-12-24
JPS5891039A (ja)	1983-05-30
DE3243868A1 (de)	1983-06-01
FR2517292A1 (fr)	1983-06-03
GB2111471A (en)	1983-07-06
KR840002327A (ko)	1984-06-25
DE3243868C2 (de)	1994-01-20

Publication	Publication Date	Title
EP0078374A3 (en)	1984-02-22	Thin film inductive transducer for perpendicular magnetic recording
GB2101911B (en)	1984-08-01	Magnetic recording media
DE3273539D1 (en)	1986-11-06	Azimuthal magnetic recording and reproducing apparatus
DE3060464D1 (en)	1982-07-15	Magnetic recording medium and process for its manufacture
BE895343A (fr)	1983-03-31	Appareil d'enregistrement magnetique
FR2353110A1 (fr)	1977-12-23	Nouveau produit d'enregistrement magnetique et procede pour sa preparation
DE3277147D1 (en)	1987-10-08	Magnetic recording media
GB2096647B (en)	1985-07-17	Magnetic recording media
GB2114990B (en)	1985-10-16	Magnetic coating for recording media
FR2501890B1 (fr)	1988-07-22	Appareil pour l'enregistrement respectivement la reproduction de supports magnetiques
FR2517099B1 (fr)	1986-04-04	Support d'enregistrement magnetique
FR2539349B1 (fr)	1986-12-12	Film polyester pour des materiaux d'enregistrement magnetique
BE877630A (fr)	1979-11-05	Procede pour ameliorer les proprietes magnetiques d'alliages fe-cr-co
GB2034341B (en)	1982-10-27	Method of producing magnetic coating material for magnetic recording media
DE3068855D1 (en)	1984-09-13	Process for the manufacture of magnetic recording media in layer form
FR2493346B1 (fr)	1985-08-09	Procede de preparation d'un alliage magnetique amorphe
FR2491900B1 (fr)	1985-11-08	Bobine pour bande magnetique d'ordinateur
FR2538593B1 (fr)	1987-01-30	Support d'enregistrement magnetique
FR2569032B1 (fr)	1994-03-18	Matiere d'enregistrement optique, procede pour sa preparation et procede d'enregistrement optique
FR2508385B1 (fr)	1986-05-02	Procede pour ameliorer la qualite d'impression de matieres pour reproduction photodurcissables et matiere photodurcissable traitee par ce procede
FR2517292B1 (fr)	1988-09-30	Procede de preparation de a-feooh aciculaire pour une matiere d'enregistrement magnetique
FR2301077A1 (fr)	1976-09-10	Procede pour accroitre la permeabilite magnetique d'un alliage
DE3276550D1 (en)	1987-07-16	Magnetic recording medium
GB8313129D0 (en)	1983-06-15	Magnetic recording medium
FR2513419B1 (fr)	1988-07-22	Support d'enregistrement magnetique et son procede de production

Legal Events

Date	Code	Title	Description
1996-09-27	ST	Notification of lapse