| 发明名称 |
Plate-like composite ferrite fine particles suitable for use in magnetic recording and process for producing the same |
| 摘要 |
Plate-like composite ferrite fine particles suitable for magnetic recording comprising plate-like composite ferrite Ba-containing fine particles which comprise from 3 to 5 atomic% Ti based on Fe<3><+>, Ni in the range of 1 < Ni/Ti </= 4 by molar amount and zinc in the vicinity of the particle surfaces in the form of a solid solution, which have an average particle diameter of not less than 0.01 mu m and less than 0.1 mu m, and the coercive force (Hc) of which scarcely varies in the temperature range of from -20 DEG C to 120 DEG C. |
| 申请公布号 |
EP0349287(B1) |
申请公布日期 |
1995.12.20 |
| 申请号 |
EP19890306549 |
申请日期 |
1989.06.27 |
| 申请人 |
TODA KOGYO CORP. |
发明人 |
MAEKAWA, MASAAKI;NAGAI, NORIMICHI;SUGITA, NORIO |
| 分类号 |
G11B5/706;(IPC1-7):G11B5/706 |
主分类号 |
G11B5/706 |
| 代理机构 |
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