发明授权
- 专利标题： Method for manufacturing magnetic recording medium and magnetic recording medium
- 专利标题（中）： 磁记录介质和磁记录介质的制造方法
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申请号： US13236726申请日： 2011-09-20
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公开(公告)号： US08475949B2公开(公告)日： 2013-07-02
- 发明人: Kaori Kimura , Yoshiyuki Kamata , Satoshi Shirotori , Masatoshi Sakurai
- 申请人： Kaori Kimura , Yoshiyuki Kamata , Satoshi Shirotori , Masatoshi Sakurai
- 申请人地址： JP Tokyo
- 专利权人： Kabusihki Kaisha Toshiba
- 当前专利权人： Kabusihki Kaisha Toshiba
- 当前专利权人地址： JP Tokyo
- 代理机构： Pillsbury Winthrop Shaw Pittman, LLP
- 优先权： JP2007-173047 20070629
- 主分类号： G11B5/66
- IPC分类号： G11B5/66
摘要：
A magnetic recording medium is presented that includes protruded magnetic patterns formed on a substrate, and a nonmagnetic material filled in recesses between the magnetic patterns in which an oxygen concentration thereof is higher at a surface side than at a substrate side. The nonmagnetic material is at least one selected from the group consisting of Si, SiC, SiC—C, SiOC, SiON, Si3N4, Al, AlxOy, Ti and TiOx.