JPS6472926A - Plate-shaped oxide magnetic powder - Google Patents

Plate-shaped oxide magnetic powder

Info

Publication number
JPS6472926A
JPS6472926A JP62230137A JP23013787A JPS6472926A JP S6472926 A JPS6472926 A JP S6472926A JP 62230137 A JP62230137 A JP 62230137A JP 23013787 A JP23013787 A JP 23013787A JP S6472926 A JPS6472926 A JP S6472926A
Authority
JP
Japan
Prior art keywords
crystal structure
magnetic powder
type crystal
plate
spinel
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
JP62230137A
Other languages
Japanese (ja)
Inventor
Hideo Torii
Koichi Ikemoto
Masaki Aoki
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP62230137A priority Critical patent/JPS6472926A/en
Priority to KR1019880005319A priority patent/KR920004999B1/en
Publication of JPS6472926A publication Critical patent/JPS6472926A/en
Pending legal-status Critical Current

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  • Compounds Of Iron (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

PURPOSE:To obtain magnetic powder usable for coat-type perpendicular magnetic recording media having two kinds of crystal structure parts in the same particle, that is, both of the part of magnetoplumbite type crystal structure, the crystal structure of hexagonal ferrite magnetic powder such as conventional barium ferrite powder, and the part of spinel type crystal structure. CONSTITUTION:This plate-shaped oxide magnetic powder has two kinds of crystal structure in the same particle, that is, both of the part of magnetoplumbite type crystal structure and the part of spinel type crystal structure and in addition, there is the three dimensional regularity of crystallographical atomic configuration between spinel block constituting the part of magnetoplumbite type crystal structure, and the part of spinel type crystal structure in contact with the spinel block. The plate-shaped oxide magnetic powder above-mentioned can be controlled the value of temp. change of coercive force Hc by controlling the proportion of the part of spinel type crystal structure in the plate-shaped magnetic powder.
JP62230137A 1987-05-07 1987-09-14 Plate-shaped oxide magnetic powder Pending JPS6472926A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP62230137A JPS6472926A (en) 1987-09-14 1987-09-14 Plate-shaped oxide magnetic powder
KR1019880005319A KR920004999B1 (en) 1987-05-07 1988-05-07 Ferrous type magnetic body and its manufacturing method and magnatic medium using it

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62230137A JPS6472926A (en) 1987-09-14 1987-09-14 Plate-shaped oxide magnetic powder

Publications (1)

Publication Number Publication Date
JPS6472926A true JPS6472926A (en) 1989-03-17

Family

ID=16903161

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62230137A Pending JPS6472926A (en) 1987-05-07 1987-09-14 Plate-shaped oxide magnetic powder

Country Status (1)

Country Link
JP (1) JPS6472926A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012119029A (en) * 2010-11-30 2012-06-21 Toda Kogyo Corp Magnetic particle powder
JP2016157939A (en) * 2015-02-23 2016-09-01 Ｄｏｗａエレクトロニクス株式会社 Ferrite powder for bonded magnet and method for producing the same, and ferrite bonded magnet

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62139122A (en) * 1985-12-12 1987-06-22 Toda Kogyo Corp Fine plate ba ferrite corpuscle powder for magnetic recording and its production
JPS63265828A (en) * 1987-04-21 1988-11-02 Dowa Mining Co Ltd Crystal anisotropy oxide magnetic material and its manufacture

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62139122A (en) * 1985-12-12 1987-06-22 Toda Kogyo Corp Fine plate ba ferrite corpuscle powder for magnetic recording and its production
JPS63265828A (en) * 1987-04-21 1988-11-02 Dowa Mining Co Ltd Crystal anisotropy oxide magnetic material and its manufacture

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012119029A (en) * 2010-11-30 2012-06-21 Toda Kogyo Corp Magnetic particle powder
JP2016157939A (en) * 2015-02-23 2016-09-01 Ｄｏｗａエレクトロニクス株式会社 Ferrite powder for bonded magnet and method for producing the same, and ferrite bonded magnet

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