发明授权
- 专利标题: Magnetic recording media and magnetic disk apparatus
- 专利标题(中): 磁记录介质和磁盘设备
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申请号: US10293261申请日: 2002-11-14
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公开(公告)号: US06852432B2公开(公告)日: 2005-02-08
- 发明人: Mitsuhiro Shoda , Naoto Endo , Noriyoshi Goda , Yuzuru Hosoe , Akira Kato
- 申请人: Mitsuhiro Shoda , Naoto Endo , Noriyoshi Goda , Yuzuru Hosoe , Akira Kato
- 申请人地址: JP Tokyo
- 专利权人: Hitachi, Ltd.
- 当前专利权人: Hitachi, Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Kenyon & Kenyon
- 主分类号: G11B5/64
- IPC分类号: G11B5/64 ; G11B5/73 ; G11B5/66 ; G11B5/70
摘要:
A magnetic recording media formed of magnetic alloy layer of Co as the main component on a substrate through an under-layer, a protective layer and a lubricant layer, stacked in this order, said under-layer comprises plural under-layers including a first under layer of a substantially amorphous and a second under layer of crystalline stacked in this order; and a Δ BH[0.01, 50] defined by |BH[0.01%]−BH[50%]|, as the difference between a height BH[0.01%] where a Bearing ratio is 0.01% and a height BH[50%] where a Bearing ratio is 50%, is not less than 3 nm and not more than 6 nm, where a Bearing Curve is given by a surface roughness curve of magnetic recording media.
公开/授权文献
- US20030215672A1 Magnetic recording media and magnetic disk apparatus 公开/授权日:2003-11-20