发明名称 |
Magnetic recording media and method of forming them |
摘要 |
The present invention is directed to carrying out a high density magnetic recording to a material having a large coercive force by perpendicular magnetic recording head. By giving a patterning onto a soft magnetic under layer of a perpendicular two-layer recording media in sync with a period of a recording bit, a magnetic field from a write head can be allowed to converge to a soft magnetic column. Therefore, a magnetization reversal of the magnetic recording media material having a large anisotropic constant becomes possible, and then a high density magnetic recording can be achieved.
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申请公布号 |
US7351445(B2) |
申请公布日期 |
2008.04.01 |
申请号 |
US20060450364 |
申请日期 |
2006.06.12 |
申请人 |
HITACHI, LTD. |
发明人 |
HAGINOYA CHISEKI;SUZUKI KAORI;KIMURA HISASHI;FUTAMOTO MASAAKI;MATSUYAMA HIDEO |
分类号 |
G05D3/00;G11B5/667;G11B5/17;G11B5/65;G11B5/73;G11B5/84;G11B5/855;G11B7/20 |
主分类号 |
G05D3/00 |
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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