发明名称 |
Magnetic recording medium, method for producing thereof, and magnetic recording and reproducing apparatus |
摘要 |
A magnetic-recording medium which is provided on a nonmagnetic substrate with at least an orientation-controlling layer for controlling the orientation of a layer formed directly thereon, a perpendicularly magnetic layer having an easily magnetizing axis oriented mainly perpendicularly relative to the nonmagnetic substrate, and a protective layer. The perpendicularly magnetic layer includes two or more magnetic layers, at least one of the magnetic layers is a layer having Co as a main component and containing Pt as well and containing an oxide, and at least another of the magnetic layers is a layer having Co as a main component and containing Cr as well and containing no oxide.
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申请公布号 |
US7867638(B2) |
申请公布日期 |
2011.01.11 |
申请号 |
US20080274879 |
申请日期 |
2008.11.20 |
申请人 |
SHOWA DENKO K.K.;KABUSHIKI KAISHA TOSHIBA |
发明人 |
SAKAWAKI AKIRA;SHIMIZU KENJI;KOBAYASHI KAZUO;SAKAI HIROSHI;OIKAWA SOICHI;IWASAKI TAKESHI;MAEDA TOMOYUKI;NAKAMURA FUTOSHI |
分类号 |
G11B5/66;C23C16/40;G11B5/64;G11B5/673 |
主分类号 |
G11B5/66 |
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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