JPH047083B2 - - Google Patents

Info

Publication number
JPH047083B2
JPH047083B2 JP57172203A JP17220382A JPH047083B2 JP H047083 B2 JPH047083 B2 JP H047083B2 JP 57172203 A JP57172203 A JP 57172203A JP 17220382 A JP17220382 A JP 17220382A JP H047083 B2 JPH047083 B2 JP H047083B2
Authority
JP
Japan
Prior art keywords
acicular
magnetic
powder
iron oxide
inert gas
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
JP57172203A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5961903A (ja
Inventor
Shigetaka Higuchi
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP57172203A priority Critical patent/JPS5961903A/ja
Publication of JPS5961903A publication Critical patent/JPS5961903A/ja
Publication of JPH047083B2 publication Critical patent/JPH047083B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/10—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
    • H01F1/11—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles
    • H01F1/112—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles with a skin
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/06—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder
    • H01F1/065—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder obtained by a reduction

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Dermatology (AREA)
  • General Health & Medical Sciences (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Magnetic Record Carriers (AREA)
  • Hard Magnetic Materials (AREA)
  • Paints Or Removers (AREA)
JP57172203A 1982-09-30 1982-09-30 磁気記録用針状金属磁性粉末の製法 Granted JPS5961903A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57172203A JPS5961903A (ja) 1982-09-30 1982-09-30 磁気記録用針状金属磁性粉末の製法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57172203A JPS5961903A (ja) 1982-09-30 1982-09-30 磁気記録用針状金属磁性粉末の製法

Publications (2)

Publication Number Publication Date
JPS5961903A JPS5961903A (ja) 1984-04-09
JPH047083B2 true JPH047083B2 (enrdf_load_stackoverflow) 1992-02-07

Family

ID=15937491

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57172203A Granted JPS5961903A (ja) 1982-09-30 1982-09-30 磁気記録用針状金属磁性粉末の製法

Country Status (1)

Country Link
JP (1) JPS5961903A (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6252904A (ja) * 1985-09-02 1987-03-07 Showa Denko Kk 磁性酸化鉄粉末の製造方法
JPS6376305A (ja) * 1986-09-18 1988-04-06 Taiyo Yuden Co Ltd プラスチツク又はゴム磁石用磁性粉及びその製造方法
JP2007126755A (ja) * 2006-12-28 2007-05-24 Toyo Tanso Kk 炭素被覆金属粒子及びその製造方法

Also Published As

Publication number Publication date
JPS5961903A (ja) 1984-04-09

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