| 发明名称 |
BARIUM FERRITE MAGNETIC POWDER AND RECORDING MEDIUM EMPLOYING THE SAME |
| 摘要 |
Disclosed is a barium ferrite magnetic powder comprising particles characterized by (A) a mean particle size of 0.3 mu m or smaller and (B) the presence of Sr, Ca and Si in respective amounts of 0.2 wt. % or less as SrO, 0.15 wt. % or less as CaO, and 0.3 wt. % or less as SiO2. Also disclosed is a recording medium comprising the barium ferrite magnetic powder. |
| 申请公布号 |
DE3472486(D1) |
申请公布日期 |
1988.08.04 |
| 申请号 |
DE19843472486 |
申请日期 |
1984.09.10 |
| 申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
KUBO, OSAMU C/O KABUSHIKI KAISHA TOSHIBA;NOMURA, TUTOMU C/O KABUSHIKI KAISHA TOSHIBA;IDO, TADASHI C/O KABUSHIKI KAISHA TOSHIBA |
| 分类号 |
C01G49/00;C01G49/02;G11B5/706;H01F1/10;H01F1/11;(IPC1-7):G11B5/706 |
主分类号 |
C01G49/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
