JPH0516163B2 - - Google Patents

Info

Publication number
JPH0516163B2
JPH0516163B2 JP58026040A JP2604083A JPH0516163B2 JP H0516163 B2 JPH0516163 B2 JP H0516163B2 JP 58026040 A JP58026040 A JP 58026040A JP 2604083 A JP2604083 A JP 2604083A JP H0516163 B2 JPH0516163 B2 JP H0516163B2
Authority
JP
Japan
Prior art keywords
cobalt
iron oxide
magnetic powder
aqueous solution
oxide magnetic
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
JP58026040A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59151402A (ja
Inventor
Susumu Kitaoka
Mikio Kishimoto
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.)
Maxell Ltd
Original Assignee
Hitachi Maxell 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 Hitachi Maxell Ltd filed Critical Hitachi Maxell Ltd
Priority to JP58026040A priority Critical patent/JPS59151402A/ja
Publication of JPS59151402A publication Critical patent/JPS59151402A/ja
Publication of JPH0516163B2 publication Critical patent/JPH0516163B2/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

  • Hard Magnetic Materials (AREA)
  • Compounds Of Iron (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)
JP58026040A 1983-02-17 1983-02-17 磁性粉末の製造方法 Granted JPS59151402A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58026040A JPS59151402A (ja) 1983-02-17 1983-02-17 磁性粉末の製造方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58026040A JPS59151402A (ja) 1983-02-17 1983-02-17 磁性粉末の製造方法

Publications (2)

Publication Number Publication Date
JPS59151402A JPS59151402A (ja) 1984-08-29
JPH0516163B2 true JPH0516163B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1993-03-03

Family

ID=12182583

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58026040A Granted JPS59151402A (ja) 1983-02-17 1983-02-17 磁性粉末の製造方法

Country Status (1)

Country Link
JP (1) JPS59151402A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5829604B2 (ja) * 1975-07-02 1983-06-23 富士写真フイルム株式会社 キヨウジセイフンマツノセイホウ
JPS57138110A (en) * 1981-02-19 1982-08-26 Sony Corp Ferromagnetic powder
JPS58115030A (ja) * 1981-12-25 1983-07-08 Ishihara Sangyo Kaisha Ltd コバルト含有磁性酸化鉄粉末の製造方法

Also Published As

Publication number Publication date
JPS59151402A (ja) 1984-08-29

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