发明名称 |
Magnetic powder for magnetic recording |
摘要 |
<p>A magnetic powder for magnetic recording is provided that has improved properties suitable for a magnetic recording medium used with a high-sensitivity read head utilizing an MR device. The magnetic powder is composed of iron-base acicular particles containing Co, Al, R (rare earth elements, including Y) and oxygen within the ranges of Co / Fe = 10 - 50 at.%, dissolved Al / (Fe + Co) = 5 - 50 at.%, R / (Fe + Co) = 2 - 25 at.% and oxygen = not greater than 25 wt%; and the acicular particles have an average major axis length of 25 - 80 nm and a saturated magnetization sigma s of 10 - 130 emu/g,</p> |
申请公布号 |
EP1343148(B1) |
申请公布日期 |
2008.05.07 |
申请号 |
EP20030004876 |
申请日期 |
2003.03.06 |
申请人 |
DOWA ELECTRONICS MATERIALS CO., LTD. |
发明人 |
MATSUMOTO, KAZUYUKI;SATO, KIMITAKA;FUJINO, TAKATOSHI;INOUE, KENICHI |
分类号 |
G11B5/706 |
主分类号 |
G11B5/706 |
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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