发明名称 |
Magnetic recording medium, magnetic storage and method for reproducing information from magnetic recording medium |
摘要 |
A magnetic recording medium includes a first magnetic layer; and a second magnetic layer formed on the first magnetic layer. The first magnetic layer and the second magnetic layer make exchange coupling therebetween and also, have their magnetizing direction in anti-parallel to one another. A net residual area magnetization of the first magnetic layer and the second magnetic layer is expressed by the following formula: |Mr1×t1−Mr2×t2| where Mr1 and Mr2 denote respective residual magnetizations of the first magnetic layer and the second magnetic layer, and t1 and t2 denote respective film thicknesses of them; and the net area magnetization at a first temperature is larger than the net area magnetization at a second temperature lower than the first temperature.
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申请公布号 |
US7768731(B2) |
申请公布日期 |
2010.08.03 |
申请号 |
US20090359641 |
申请日期 |
2009.01.26 |
申请人 |
SHOWA DENKO K.K. |
发明人 |
INOMATA AKIHIRO;AJAN ANTONY;TAGUCHI JUN;MATSUMOTO KOJI;YAMAGISHI WATARU |
分类号 |
G11B5/02;G11B5/66;G11B5/851;G11B11/10;G11B11/105 |
主分类号 |
G11B5/02 |
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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