JPS52114499A - Cobalttdoped acicular gammaa ferric oxide crystal process for preparing same and magnetic tape - Google Patents

Cobalttdoped acicular gammaa ferric oxide crystal process for preparing same and magnetic tape

Info

Publication number
JPS52114499A
JPS52114499A JP2686877A JP2686877A JPS52114499A JP S52114499 A JPS52114499 A JP S52114499A JP 2686877 A JP2686877 A JP 2686877A JP 2686877 A JP2686877 A JP 2686877A JP S52114499 A JPS52114499 A JP S52114499A
Authority
JP
Japan
Prior art keywords
cobalttdoped
gammaa
acicular
magnetic tape
ferric oxide
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.)
Pending
Application number
JP2686877A
Other languages
English (en)
Japanese (ja)
Inventor
Jiyan Pangoo Berunaaru
Marii Anri Ekutooru Jiyan
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of JPS52114499A publication Critical patent/JPS52114499A/ja
Pending 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)
  • Paints Or Removers (AREA)
JP2686877A 1976-03-12 1977-03-11 Cobalttdoped acicular gammaa ferric oxide crystal process for preparing same and magnetic tape Pending JPS52114499A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7607074A FR2344107A1 (fr) 1976-03-12 1976-03-12 Oxyde ferrique aciculaire pour l'enregistrement magnetique et procede pour sa fabrication

Publications (1)

Publication Number Publication Date
JPS52114499A true JPS52114499A (en) 1977-09-26

Family

ID=9170308

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2686877A Pending JPS52114499A (en) 1976-03-12 1977-03-11 Cobalttdoped acicular gammaa ferric oxide crystal process for preparing same and magnetic tape

Country Status (6)

Country Link
JP (1) JPS52114499A (enrdf_load_stackoverflow)
BE (1) BE852362A (enrdf_load_stackoverflow)
DE (1) DE2710776A1 (enrdf_load_stackoverflow)
FR (1) FR2344107A1 (enrdf_load_stackoverflow)
GB (1) GB1552405A (enrdf_load_stackoverflow)
NL (1) NL7702651A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57501053A (enrdf_load_stackoverflow) * 1980-07-16 1982-06-10
JPS5826035A (ja) * 1981-07-31 1983-02-16 Ishihara Sangyo Kaisha Ltd コバルト含有磁性酸化鉄の製造方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3514008A1 (de) * 1985-04-18 1986-10-23 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung isotroper magnetischer, kobalthaltiger eisenoxide aus eisen (iii)-salzen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD91017A (enrdf_load_stackoverflow) *
JPS5523449B2 (enrdf_load_stackoverflow) * 1974-08-11 1980-06-23
JPS5422838B2 (enrdf_load_stackoverflow) * 1974-08-11 1979-08-09

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57501053A (enrdf_load_stackoverflow) * 1980-07-16 1982-06-10
JPS5826035A (ja) * 1981-07-31 1983-02-16 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
NL7702651A (nl) 1977-09-14
FR2344107B1 (enrdf_load_stackoverflow) 1980-04-30
DE2710776A1 (de) 1977-09-15
GB1552405A (en) 1979-09-12
FR2344107A1 (fr) 1977-10-07
BE852362A (fr) 1977-09-12

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