| 发明名称 |
Magnetoplumbite Ferritteilchen für Magnetkarte, Verfahren, und Magnetkarte |
| 摘要 |
Magneto-plumbite ferrite particles for magnetic cards, which particles are of formula (I) AO.n{ (Fe1-(a+b)BiaMb)2O3} (I) wherein A is at least one metal selected from Ba, Sr and Ca; M is either Co and Sn or Co, Ti and Sn; n is from 5.5 to 6.1; a is from 0.001 to 0.010; and b is from 0.010 to 0.200; and in which particles the change of coercive force with temperature from -10 to 120 DEG C is from -1.5 to +1.5 Oe/ DEG C. |
| 申请公布号 |
DE69400341(T2) |
申请公布日期 |
1996.12.12 |
| 申请号 |
DE1994600341T |
申请日期 |
1994.01.27 |
| 申请人 |
TODA KOGYO CORP., HIROSHIMA, JP |
发明人 |
SANADA, KAZUTOSHI, HIROSHIMA-SHI, HIROSHIMA-KEN, JP;YAMAMOTO, SHIGEHISA, HIROSHIMA-SHI, HIROSHIMA-KEN, JP |
| 分类号 |
C01G49/00;C09D5/23;C09D7/12;G11B5/706;G11B5/80;H01F1/11;(IPC1-7):H01F1/11;G06K19/12 |
主分类号 |
C01G49/00 |
| 代理机构 |
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