发明申请
- 专利标题: PERPENDICULAR MAGNETIC RECORDING MEDIUM AND PERPENDICULAR MAGNETIC RECORDING MEDIUM MANUFACTURING METHOD
- 专利标题(中): 全磁磁记录介质和全磁记录介质制造方法
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申请号: US12602446申请日: 2008-05-30
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公开(公告)号: US20100190035A1公开(公告)日: 2010-07-29
- 发明人: Yoshiaki Sonobe , Kong Kim
- 申请人: Yoshiaki Sonobe , Kong Kim
- 申请人地址: JP Shinjuku-ku, Tokyo
- 专利权人: HOYA CORPORATION
- 当前专利权人: HOYA CORPORATION
- 当前专利权人地址: JP Shinjuku-ku, Tokyo
- 优先权: JP2007-144230 20070530
- 国际申请: PCT/JP2008/060052 WO 20080530
- 主分类号: G11B5/66
- IPC分类号: G11B5/66 ; G11B5/84
摘要:
[Problems] To provide a reinforcing layer between a main recording layer and a continuous layer so as to improve the S/N ratio of a magnetic recording medium and reduce the write fringing effect by the new configuration.[Means for Solving Problems] A perpendicular magnetic recording medium (100) includes a substrate (110), and a main recording layer (122), a reinforcing layer (124), and a continuous layer (126) which are overlaid in this order on the substrate. The reinforcing layer (124) has a granular structure. The saturation magnetization Ms of the reinforcing layer (124) is higher than the saturation magnetization of the main recording layer (122).