JPH0463525B2 - - Google Patents

Info

Publication number
JPH0463525B2
JPH0463525B2 JP57124682A JP12468282A JPH0463525B2 JP H0463525 B2 JPH0463525 B2 JP H0463525B2 JP 57124682 A JP57124682 A JP 57124682A JP 12468282 A JP12468282 A JP 12468282A JP H0463525 B2 JPH0463525 B2 JP H0463525B2
Authority
JP
Japan
Prior art keywords
magnetic
iron oxide
lattice constant
powder
transfer characteristics
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 - Lifetime
Application number
JP57124682A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5914608A (ja
Inventor
Hajime Kawamata
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP57124682A priority Critical patent/JPS5914608A/ja
Publication of JPS5914608A publication Critical patent/JPS5914608A/ja
Publication of JPH0463525B2 publication Critical patent/JPH0463525B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • G11B5/70668—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 containing a dopant
    • G11B5/70673—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 containing a dopant containing Co

Landscapes

  • Compounds Of Iron (AREA)
  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)
  • Hard Magnetic Materials (AREA)
JP57124682A 1982-07-16 1982-07-16 磁気記録媒体 Granted JPS5914608A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57124682A JPS5914608A (ja) 1982-07-16 1982-07-16 磁気記録媒体

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57124682A JPS5914608A (ja) 1982-07-16 1982-07-16 磁気記録媒体

Publications (2)

Publication Number Publication Date
JPS5914608A JPS5914608A (ja) 1984-01-25
JPH0463525B2 true JPH0463525B2 (enrdf_load_stackoverflow) 1992-10-12

Family

ID=14891459

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57124682A Granted JPS5914608A (ja) 1982-07-16 1982-07-16 磁気記録媒体

Country Status (1)

Country Link
JP (1) JPS5914608A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5030332A (en) * 1990-04-19 1991-07-09 Massachusetts Institute Of Technology Method for making magnetic oxide precipitates

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5931961B2 (ja) * 1977-04-20 1984-08-06 日立マクセル株式会社 強磁性粉末の製造方法
JPS5572007A (en) * 1978-11-24 1980-05-30 Sony Corp Magnetic material
JPS5583209A (en) * 1978-12-20 1980-06-23 Hitachi Maxell Ltd Ferromagnetic powder and preparing the same
JPS5752106A (en) * 1980-09-11 1982-03-27 Tdk Corp Magnetic powder for magnetic recording

Also Published As

Publication number Publication date
JPS5914608A (ja) 1984-01-25

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