| 发明名称 |
Barium ferrite magnetic powder and recording medium employing the same. |
| 摘要 |
<p>Disclosed is a barium ferrite magnetic powder characterized in that its mean particle size is 0.3 µm or smaller, and Sr, Ca and Si is contained in an amount of 0.2 wt.% or less as SrO, 0.15 wt.% or less as CaO and 0.3 wt.% or less as SiO<Sub>2</Sub>, respectively. Also disclosed is a recording medium comprising the barium ferrite magnetic powder.</p> |
| 申请公布号 |
EP0136599(A2) |
申请公布日期 |
1985.04.10 |
| 申请号 |
EP19840110769 |
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 |
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代理人 |
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| 主权项 |
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| 地址 |
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