JPS56149328A - Manufacture of magnetic oxide material - Google Patents
Manufacture of magnetic oxide materialInfo
- Publication number
- JPS56149328A JPS56149328A JP5171180A JP5171180A JPS56149328A JP S56149328 A JPS56149328 A JP S56149328A JP 5171180 A JP5171180 A JP 5171180A JP 5171180 A JP5171180 A JP 5171180A JP S56149328 A JPS56149328 A JP S56149328A
- Authority
- JP
- Japan
- Prior art keywords
- soln
- oxide material
- molar ratio
- magnetic oxide
- metallic salts
- 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 a magnetic oxide material having crystal structure desirable as magnetic medium particles by adding an alkali to a soln. contg. metallic salts of Fe, Ba in a specified molar ratio to Fe and a specified metallic element in a specified molar ratio to Fe and reacting them under high pressure.
CONSTITUTION: A soln. is prepared contg. metallic salts of Fe, Ba in 1/12W3/12mol ratio to Fe and a merallic element with average valency of 3 such as Co, Zn, Ti or Ge except Ba and Fe in 1.0/12W1.8/12 molar ratio to Fe. To the soln. is added an aqueous soln. of an alkali such as sodium hudroxide in an amount 1W5 times as much as the total amount of the metallic salts by equivalent, and they are reacted at ≥400°C in an autoclave to obtain a magnetic oxide material having magnetoplumbite type crystal structure, a large quantity of saturation magnetization, superior coercive force, etc.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5171180A JPS56149328A (en) | 1980-04-21 | 1980-04-21 | Manufacture of magnetic oxide material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5171180A JPS56149328A (en) | 1980-04-21 | 1980-04-21 | Manufacture of magnetic oxide material |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56149328A true JPS56149328A (en) | 1981-11-19 |
Family
ID=12894471
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5171180A Pending JPS56149328A (en) | 1980-04-21 | 1980-04-21 | Manufacture of magnetic oxide material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56149328A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59207605A (en) * | 1983-05-11 | 1984-11-24 | Tohoku Metal Ind Ltd | Manufacture of powder for magnetic recording |
DE3729497A1 (en) * | 1986-09-05 | 1988-03-10 | Nippon Zeon Co | MAGNETIC POWDER FOR MAGNETIC RECORDING |
US4828916A (en) * | 1986-12-27 | 1989-05-09 | Toda Kogyo Corporation | Plate-like magnetoplumbite type ferrite particles for magnetic recording and magnetic recording media using the same |
US5055322A (en) * | 1989-11-02 | 1991-10-08 | Nippon Zeon Co., Ltd. | Method of producing magnetic recording media |
US5358660A (en) * | 1988-01-14 | 1994-10-25 | Showa Denko Kabushiki Kaisha | Magnetic particles for perpendicular magnetic recording |
-
1980
- 1980-04-21 JP JP5171180A patent/JPS56149328A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59207605A (en) * | 1983-05-11 | 1984-11-24 | Tohoku Metal Ind Ltd | Manufacture of powder for magnetic recording |
JPH0531281B2 (en) * | 1983-05-11 | 1993-05-12 | Tokin Corp | |
DE3729497A1 (en) * | 1986-09-05 | 1988-03-10 | Nippon Zeon Co | MAGNETIC POWDER FOR MAGNETIC RECORDING |
US4828916A (en) * | 1986-12-27 | 1989-05-09 | Toda Kogyo Corporation | Plate-like magnetoplumbite type ferrite particles for magnetic recording and magnetic recording media using the same |
US5358660A (en) * | 1988-01-14 | 1994-10-25 | Showa Denko Kabushiki Kaisha | Magnetic particles for perpendicular magnetic recording |
US5055322A (en) * | 1989-11-02 | 1991-10-08 | Nippon Zeon Co., Ltd. | Method of producing magnetic recording media |
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