JPS567403A - Preparation of acicular crystalline magnetic iron oxide grain powder - Google Patents

Preparation of acicular crystalline magnetic iron oxide grain powder

Info

Publication number
JPS567403A
JPS567403A JP8328479A JP8328479A JPS567403A JP S567403 A JPS567403 A JP S567403A JP 8328479 A JP8328479 A JP 8328479A JP 8328479 A JP8328479 A JP 8328479A JP S567403 A JPS567403 A JP S567403A
Authority
JP
Japan
Prior art keywords
grains
acicular
heated
produce
grain powder
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.)
Granted
Application number
JP8328479A
Other languages
English (en)
Other versions
JPS5932046B2 (ja
Inventor
Nanao Horiishi
Atsushi Takedoi
Akira Mukozaka
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.)
Toda Kogyo Corp
Original Assignee
Toda Kogyo Corp
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 Toda Kogyo Corp filed Critical Toda Kogyo Corp
Priority to JP54083284A priority Critical patent/JPS5932046B2/ja
Publication of JPS567403A publication Critical patent/JPS567403A/ja
Publication of JPS5932046B2 publication Critical patent/JPS5932046B2/ja
Expired 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

Landscapes

  • Compounds Of Iron (AREA)
  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)
  • Hard Magnetic Materials (AREA)
JP54083284A 1979-06-30 1979-06-30 針状晶磁性酸化鉄粒子粉末の製造法 Expired JPS5932046B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54083284A JPS5932046B2 (ja) 1979-06-30 1979-06-30 針状晶磁性酸化鉄粒子粉末の製造法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54083284A JPS5932046B2 (ja) 1979-06-30 1979-06-30 針状晶磁性酸化鉄粒子粉末の製造法

Publications (2)

Publication Number Publication Date
JPS567403A true JPS567403A (en) 1981-01-26
JPS5932046B2 JPS5932046B2 (ja) 1984-08-06

Family

ID=13798068

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54083284A Expired JPS5932046B2 (ja) 1979-06-30 1979-06-30 針状晶磁性酸化鉄粒子粉末の製造法

Country Status (1)

Country Link
JP (1) JPS5932046B2 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5860624A (ja) * 1981-10-01 1983-04-11 Agency Of Ind Science & Technol 強磁性粉末およびその製造方法
WO1984000240A1 (en) * 1982-07-01 1984-01-19 Sony Corp Magnetic recording medium

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5860624A (ja) * 1981-10-01 1983-04-11 Agency Of Ind Science & Technol 強磁性粉末およびその製造方法
JPS6018609B2 (ja) * 1981-10-01 1985-05-11 工業技術院長 強磁性粉末およびその製造方法
WO1984000240A1 (en) * 1982-07-01 1984-01-19 Sony Corp Magnetic recording medium

Also Published As

Publication number Publication date
JPS5932046B2 (ja) 1984-08-06

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