JPS6442328A - Magnetoplumbite type ferrite magnetic powder and magnetic recording medium using same - Google Patents
Magnetoplumbite type ferrite magnetic powder and magnetic recording medium using sameInfo
- 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
Links
Landscapes
- 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.
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)
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)
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 |
-
1987
- 1987-08-11 JP JP19909687A patent/JPS6442328A/en active Pending
Patent Citations (1)
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)
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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