发明申请
- 专利标题： Perpendicular magnetic recording medium for high density recording and manufacturing of the same
- 专利标题（中）： 用于高密度记录和制造的垂直磁记录介质
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申请号： US11295005申请日： 2005-12-05
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公开(公告)号： US20060127703A1公开(公告)日： 2006-06-15
- 发明人: Ikuko Takekuma , Reiko Arai , Yoko Ogawa , Yoshiyuki Hirayama , Yuzuru Hosoe , Tomio Iwasaki
- 申请人： Ikuko Takekuma , Reiko Arai , Yoko Ogawa , Yoshiyuki Hirayama , Yuzuru Hosoe , Tomio Iwasaki
- 申请人地址： NL Amsterdam
- 专利权人： Hitachi Global Storage Technologies Netherlands B.V.
- 当前专利权人： Hitachi Global Storage Technologies Netherlands B.V.
- 当前专利权人地址： NL Amsterdam
- 优先权： JP2004-359868 20041213
- 主分类号： G11B5/66
- IPC分类号： G11B5/66 ; C23C14/00
摘要：
Embodiments of the invention provide a medium which provides high media S/N and good corrosion resistance. According to one embodiment, in a perpendicular magnetic recording medium at least comprising a soft-magnetic underlayer, a seed layer, an intermediate layer, a magnetic recording layer and an overcoat layer which are stacked over a substrate in order, the magnetic recording layer has a granular structure which consists of many columnar grains of CoCrPt alloy and a grain boundary layer containing an oxide, the seed layer is made of TaNi alloy or TaTi alloy and the intermediate layer is made of Ru or Ru alloy which contains about 80 at. % Ru or more.
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