发明授权
- 专利标题： Heat-assisted magnetic recording medium and magnetic storage device
- 专利标题（中）： 热辅助磁记录介质和磁存储装置
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申请号： US13384933申请日： 2010-08-19
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公开(公告)号： US08279739B2公开(公告)日： 2012-10-02
- 发明人: Tetsuya Kanbe , Yuzo Sasaki , Atsushi Hashimoto
- 申请人： Tetsuya Kanbe , Yuzo Sasaki , Atsushi Hashimoto
- 申请人地址： JP Tokyo
- 专利权人： Showa Denko K.K.
- 当前专利权人： Showa Denko K.K.
- 当前专利权人地址： JP Tokyo
- 代理机构： Sughrue Mion, PLLC
- 优先权： JP2009-191167 20090820
- 国际申请： PCT/JP2010/063963 WO 20100819
- 国际公布： WO2011/021652 WO 20110224
- 主分类号： G11B3/70
- IPC分类号： G11B3/70
摘要：
A heat-assisted magnetic recording medium that includes a substrate, underlayers formed on the substrate, and a magnetic layer which is formed on the underlayers and contains either an FePt alloy having an L10 structure or a CoPt alloy having an L10 structure as a main component, wherein the underlayers include a first underlayer formed from an amorphous alloy, a second underlayer formed from an alloy having a BCC structure containing Cr as a main component and also containing at least one element selected from among Ti, Mo, W, V, Mn and Ru, and a third underlayer formed from MgO. Also, a magnetic storage device that uses the heat-assisted magnetic recording medium.