发明名称 |
Perpendicular magnetic recording medium and magnetic recording/reproducing apparatus |
摘要 |
Disclosed is a perpendicular magnetic recording medium including a nonmagnetic substrate, a multilayered underlayer which includes a ferromagnetic underlayer having a perpendicular coercive force of 39.5 kA/m or less and a weakly magnetic underlayer having a saturation magnetization Ms of 50 to 150 emu/cc, and a perpendicular magnetic recording layer.
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申请公布号 |
US2004219329(A1) |
申请公布日期 |
2004.11.04 |
申请号 |
US20040791277 |
申请日期 |
2004.03.03 |
申请人 |
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发明人 |
OIKAWA SOICHI;IWASAKI TAKESHI;SAKAI HIROSHI;SAKAWAKI AKIRA;SHIMIZU KENJI |
分类号 |
G11B5/738;G11B5/64;G11B5/66;G11B5/667;G11B5/73;H01F10/16;(IPC1-7):B32B3/02 |
主分类号 |
G11B5/738 |
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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