发明名称 |
Soft magnetic film for perpendicular recording disk |
摘要 |
A perpendicular magnetic recording disk having a soft magnetic film disposed between a substrate and a magnetic recording layer. The soft magnetic film includes a soft magnetic underlayer and one or more layer groups having a spacer layer and a soft magnetic layer disposed above the spacer layer in each layer group. The spacer layers induce anti-ferromagnetic coupling between the surrounding ferromagnetic layers. The spacer layers may be comprised of ruthenium. The soft magnetic layers may have a granular decoupled structured through the use of a segregate.
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申请公布号 |
US6893748(B2) |
申请公布日期 |
2005.05.17 |
申请号 |
US20030442756 |
申请日期 |
2003.05.20 |
申请人 |
KOMAG, INC. |
发明人 |
BERTERO GERARDO;WACHENSCHWANZ DAVID;MALHOTRA SUDHIR;VELU EMUR M. |
分类号 |
G11B5/64;G11B5/65;G11B5/66;G11B5/667;G11B5/73;G11B5/851;(IPC1-7):G11B5/66;G11B5/70;B05D5/12 |
主分类号 |
G11B5/64 |
代理机构 |
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主权项 |
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地址 |
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