发明申请
- 专利标题： Magnetic recording medium, magnetic recording and reproducing apparatus, and method for manufacturing magnetic recording medium
- 专利标题（中）： 磁记录介质，磁记录和再现装置以及磁记录介质的制造方法
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申请号： US12314996申请日： 2008-12-19
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公开(公告)号： US20090168244A1公开(公告)日： 2009-07-02
- 发明人: Shuichi Okawa , Kazuhiro Hattori , Narutoshi Fukuzawa , Takahiro Suwa
- 申请人： Shuichi Okawa , Kazuhiro Hattori , Narutoshi Fukuzawa , Takahiro Suwa
- 申请人地址： JP Tokyo
- 专利权人： TDK CORPORATION
- 当前专利权人： TDK CORPORATION
- 当前专利权人地址： JP Tokyo
- 优先权： JP2007-334410 20071226; JP2008-262167 20081008
- 主分类号： G11B5/82
- IPC分类号： G11B5/82 ; B05D5/12 ; B44C1/22
摘要：
The magnetic recording medium includes: a substrate; a recording layer formed in a predetermined concavo-convex pattern over the substrate, the concavo-convex pattern including a convex portion that serves as a recording element; and a filling portion that fills a concave portion between the recording elements. The filling portion comprises a metal-based main filling material and nitrogen. Nitrogen is unevenly distributed in the filling portion such that the ratio of the number of nitrogen atoms to the total number of atoms of the main filling material and nitrogen atoms is greater in the upper surface portion of the filling portion than in the lower portion thereof.
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