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
FR2517292B1 FR8219987A FR8219987A FR2517292B1 FR 2517292 B1 FR2517292 B1 FR 2517292B1 FR 8219987 A FR8219987 A FR 8219987A FR 8219987 A FR8219987 A FR 8219987A FR 2517292 B1 FR2517292 B1 FR 2517292B1
Authority
FR
France
Prior art keywords
feooh
acicular
preparation
magnetic recording
recording material
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
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.)
Filing date
Publication date
Application filed by Ishihara Sangyo Kaisha Ltd filed Critical Ishihara Sangyo Kaisha Ltd
Publication of FR2517292A1 publication Critical patent/FR2517292A1/fr
Application granted granted Critical
Publication of FR2517292B1 publication Critical patent/FR2517292B1/fr
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00Compounds of iron
    • C01G49/02Oxides; Hydroxides
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00Compounds of iron
    • C01G49/02Oxides; Hydroxides
    • C01G49/06Ferric oxide [Fe2O3]
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62Record carriers characterised by the selection of the material
    • G11B5/68Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70Record 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
    • G11B5/706Record 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
    • G11B5/70626Record 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
    • G11B5/70642Record 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
    • G11B5/70652Record 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
    • G11B5/70663Preparation processes specially adapted therefor, e.g. using stabilising agents
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032Magnets 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
    • H01F1/10Magnets 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
    • H01F1/11Magnets 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
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00Particle morphology
    • C01P2004/01Particle morphology depicted by an image
    • C01P2004/03Particle morphology depicted by an image obtained by SEM
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00Particle morphology
    • C01P2004/10Particle morphology extending in one dimension, e.g. needle-like
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00Particle morphology
    • C01P2004/51Particles with a specific particle size distribution
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00Particle morphology
    • C01P2004/54Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00Physical properties of inorganic compounds
    • C01P2006/12Surface area
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00Physical properties of inorganic compounds
    • C01P2006/42Magnetic 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
EP0726878B1 (fr) * 1993-11-01 1999-05-12 Minnesota Mining And Manufacturing Company Procede de fabrication de 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

Also Published As

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

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Legal Events

Date Code Title Description
ST Notification of lapse