JPS6244842B2 - - Google Patents

Info

Publication number
JPS6244842B2
JPS6244842B2 JP56158129A JP15812981A JPS6244842B2 JP S6244842 B2 JPS6244842 B2 JP S6244842B2 JP 56158129 A JP56158129 A JP 56158129A JP 15812981 A JP15812981 A JP 15812981A JP S6244842 B2 JPS6244842 B2 JP S6244842B2
Authority
JP
Japan
Prior art keywords
powder
magnetic
iron
rare earth
atomic
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
Application number
JP56158129A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5860504A (ja
Inventor
Yoshiharu Shimokawa
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.)
Chiyoda Corp
Original Assignee
Chiyoda Chemical Engineering and Construction 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 Chiyoda Chemical Engineering and Construction Co Ltd filed Critical Chiyoda Chemical Engineering and Construction Co Ltd
Priority to JP56158129A priority Critical patent/JPS5860504A/ja
Publication of JPS5860504A publication Critical patent/JPS5860504A/ja
Publication of JPS6244842B2 publication Critical patent/JPS6244842B2/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

  • Magnetic Record Carriers (AREA)
  • Hard Magnetic Materials (AREA)
  • Compounds Of Iron (AREA)
  • Paints Or Removers (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
JP56158129A 1981-10-06 1981-10-06 針状の磁性粉末 Granted JPS5860504A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56158129A JPS5860504A (ja) 1981-10-06 1981-10-06 針状の磁性粉末

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56158129A JPS5860504A (ja) 1981-10-06 1981-10-06 針状の磁性粉末

Publications (2)

Publication Number Publication Date
JPS5860504A JPS5860504A (ja) 1983-04-11
JPS6244842B2 true JPS6244842B2 (enrdf_load_stackoverflow) 1987-09-22

Family

ID=15664915

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56158129A Granted JPS5860504A (ja) 1981-10-06 1981-10-06 針状の磁性粉末

Country Status (1)

Country Link
JP (1) JPS5860504A (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010092587A (ja) * 2010-01-27 2010-04-22 Dowa Holdings Co Ltd 強磁性金属粉末及びそれを用いた磁気記録媒体
JP5130456B2 (ja) * 2011-03-11 2013-01-30 Ｄｏｗａエレクトロニクス株式会社 強磁性金属粉末及びそれを用いた磁気記録媒体

Also Published As

Publication number Publication date
JPS5860504A (ja) 1983-04-11

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