JPH0425687B2 - - Google Patents

Info

Publication number
JPH0425687B2
JPH0425687B2 JP58021282A JP2128283A JPH0425687B2 JP H0425687 B2 JPH0425687 B2 JP H0425687B2 JP 58021282 A JP58021282 A JP 58021282A JP 2128283 A JP2128283 A JP 2128283A JP H0425687 B2 JPH0425687 B2 JP H0425687B2
Authority
JP
Japan
Prior art keywords
cobalt
compound
iron oxide
aqueous solution
mol
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
JP58021282A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59147414A (ja
Inventor
Kazuo Nakada
Seigo Maruo
Kyoshi Asano
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
Priority to JP58021282A priority Critical patent/JPS59147414A/ja
Priority to AU13089/83A priority patent/AU558199B2/en
Priority to KR1019830001384A priority patent/KR880001711B1/ko
Priority to DE19833312243 priority patent/DE3312243A1/de
Priority to CA000425211A priority patent/CA1257961A/en
Priority to US06/482,225 priority patent/US4539261A/en
Priority to GB08309296A priority patent/GB2127797B/en
Priority to FR8305623A priority patent/FR2533206B1/fr
Priority to NL8301209A priority patent/NL191291C/xx
Publication of JPS59147414A publication Critical patent/JPS59147414A/ja
Publication of JPH0425687B2 publication Critical patent/JPH0425687B2/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

  • Inorganic Compounds Of Heavy Metals (AREA)
  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)
  • Hard Magnetic Materials (AREA)
JP58021282A 1982-09-16 1983-02-10 コバルト含有磁性酸化鉄粉末の製造方法 Granted JPS59147414A (ja)

Priority Applications (9)

Application Number Priority Date Filing Date Title
JP58021282A JPS59147414A (ja) 1983-02-10 1983-02-10 コバルト含有磁性酸化鉄粉末の製造方法
AU13089/83A AU558199B2 (en) 1982-09-16 1983-03-31 Production of magnetic powder
KR1019830001384A KR880001711B1 (ko) 1982-09-16 1983-04-04 자성분말의 제조방법
DE19833312243 DE3312243A1 (de) 1982-09-16 1983-04-05 Verfahren zur herstellung eines magnetpulvers
CA000425211A CA1257961A (en) 1982-09-16 1983-04-05 Process for producing magnetic powder
US06/482,225 US4539261A (en) 1982-09-16 1983-04-05 Process for producing magnetic powder and product
GB08309296A GB2127797B (en) 1982-09-16 1983-04-06 Process for producing magnetic powder
FR8305623A FR2533206B1 (fr) 1982-09-16 1983-04-06 Procede de preparation d'une poudre magnetique a base d'oxyde de fer magnetique et produit obtenu
NL8301209A NL191291C (nl) 1982-09-16 1983-04-06 Werkwijze ter bereiding van een magnetisch poeder, alsmede registratiemedium dat een dergelijk poeder bevat.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58021282A JPS59147414A (ja) 1983-02-10 1983-02-10 コバルト含有磁性酸化鉄粉末の製造方法

Publications (2)

Publication Number Publication Date
JPS59147414A JPS59147414A (ja) 1984-08-23
JPH0425687B2 true JPH0425687B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1992-05-01

Family

ID=12050776

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58021282A Granted JPS59147414A (ja) 1982-09-16 1983-02-10 コバルト含有磁性酸化鉄粉末の製造方法

Country Status (1)

Country Link
JP (1) JPS59147414A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0676218B2 (ja) * 1988-02-10 1994-09-28 石原産業株式会社 コバルト含有強磁性酸化鉄の製造方法
JPH0755832B2 (ja) * 1988-09-19 1995-06-14 石原産業株式会社 コバルト含有強磁性酸化鉄粉末の製造方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2916403A1 (de) * 1979-04-23 1980-11-06 Basf Ag Nadelfoermiges magnetisches eisenoxid und verfahren zu seiner herstellung
JPS5818904A (ja) * 1981-07-27 1983-02-03 Ishihara Sangyo Kaisha Ltd コバルト含有磁性酸化鉄の製造方法

Also Published As

Publication number Publication date
JPS59147414A (ja) 1984-08-23

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