JPS6442328A - Magnetoplumbite type ferrite magnetic powder and magnetic recording medium using same - Google Patents

Magnetoplumbite type ferrite magnetic powder and magnetic recording medium using same

Info

Publication number
JPS6442328A
JPS6442328A JP19909687A JP19909687A JPS6442328A JP S6442328 A JPS6442328 A JP S6442328A JP 19909687 A JP19909687 A JP 19909687A JP 19909687 A JP19909687 A JP 19909687A JP S6442328 A JPS6442328 A JP S6442328A
Authority
JP
Japan
Prior art keywords
recording medium
atom
ferrite
magnetic powder
magnetoplumbite type
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
JP19909687A
Other languages
Japanese (ja)
Inventor
Kyoji Odan
Takayuki Kimura
Kazuo Hashimoto
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.)
Ube Corp
Original Assignee
Ube Industries 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 Ube Industries Ltd filed Critical Ube Industries Ltd
Priority to JP19909687A priority Critical patent/JPS6442328A/en
Publication of JPS6442328A publication Critical patent/JPS6442328A/en
Pending legal-status Critical Current

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

Abstract

PURPOSE:To obtain magnetic powder having high saturation magnetization and to improve output of a recording medium used the powder, by substituting Fe atom by other metal atom and by decreasing the sum of valence number of substituting atom compared with one of Fe to produce ferrite of general formula. CONSTITUTION:The titled magnetoplumbite type ferrite magnetic powder consists of hexagonal system ferrite of formula, where A is an atom selected among Ba, Sr, Pb and Ca, M1 is a metal atom selected among Co, Ni, Cu, Zn and Cd, M2 is a metal atom selected among Ti, Ge, Sn, Zr, Nb and V, x is 0.5-3, y is 0-20, z is >=0.05 and z={x+(3-m)y}/2 (where, m is mean atom valance of M2) and n is 0.8-1. The magnetic recording medium is obtd. by using the ferrite corpuscle above-mentioned, having 0.01-0.2mum mean particle diameter and 200-2,000Oe coercive force.
JP19909687A 1987-08-11 1987-08-11 Magnetoplumbite type ferrite magnetic powder and magnetic recording medium using same Pending JPS6442328A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19909687A JPS6442328A (en) 1987-08-11 1987-08-11 Magnetoplumbite type ferrite magnetic powder and magnetic recording medium using same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19909687A JPS6442328A (en) 1987-08-11 1987-08-11 Magnetoplumbite type ferrite magnetic powder and magnetic recording medium using same

Publications (1)

Publication Number Publication Date
JPS6442328A true JPS6442328A (en) 1989-02-14

Family

ID=16402053

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19909687A Pending JPS6442328A (en) 1987-08-11 1987-08-11 Magnetoplumbite type ferrite magnetic powder and magnetic recording medium using same

Country Status (1)

Country Link
JP (1) JPS6442328A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0223601A (en) * 1988-07-12 1990-01-25 Toshiba Corp Magnetic powder for magnetic recording

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63185829A (en) * 1986-09-19 1988-08-01 Nippon Zeon Co Ltd Magnetic powder for magnetic recording

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63185829A (en) * 1986-09-19 1988-08-01 Nippon Zeon Co Ltd Magnetic powder for magnetic recording

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0223601A (en) * 1988-07-12 1990-01-25 Toshiba Corp Magnetic powder for magnetic recording

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