发明授权
US08498081B2 Perpendicular magnetic recording medium including soft-magnetic-particles-mixed protective layer on top of recording layer and magnetic disk device having the same
有权
在记录层顶部包括软磁粒子混合保护层的垂直磁记录介质和具有该垂直磁记录介质的磁盘装置
- 专利标题： Perpendicular magnetic recording medium including soft-magnetic-particles-mixed protective layer on top of recording layer and magnetic disk device having the same
- 专利标题（中）： 在记录层顶部包括软磁粒子混合保护层的垂直磁记录介质和具有该垂直磁记录介质的磁盘装置
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申请号： US13404805申请日： 2012-02-24
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公开(公告)号： US08498081B2公开(公告)日： 2013-07-30
- 发明人: Tomoko Taguchi , Hiroyuki Hyodo
- 申请人： Tomoko Taguchi , Hiroyuki Hyodo
- 申请人地址： JP Tokyo
- 专利权人： Kabushiki Kaisha Toshiba
- 当前专利权人： Kabushiki Kaisha Toshiba
- 当前专利权人地址： JP Tokyo
- 代理机构： Patterson & Sheridan LLP
- 优先权： JP2011-065287 20110324
- 主分类号： G11B5/82
- IPC分类号： G11B5/82
摘要：
According to one embodiment, a perpendicular magnetic recording medium characterized by includes: a substrate; an undercoat layer formed on the substrate and made of a soft magnetic material; a recording layer formed on the undercoat layer and having an easy axis of magnetization in a direction that is approximately perpendicular to a surface of the perpendicular magnetic recording medium; and a protective layer which is formed on the recording layer and in which soft magnetic particles are mixed.
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