- 专利标题: Perpendicular magnetic recording media
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申请号: US10372335申请日: 2003-02-25
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公开(公告)号: US06916557B2公开(公告)日: 2005-07-12
- 发明人: Yoshiyuki Hirayama , Hiroyuki Nakagawa , Hiroaki Nemoto , Ichiro Tamai , Ikuko Takekuma
- 申请人: Yoshiyuki Hirayama , Hiroyuki Nakagawa , Hiroaki Nemoto , Ichiro Tamai , Ikuko Takekuma
- 申请人地址: JP Kanagawa-ken
- 专利权人: Hitachi Global Storage Technologies Japan, Ltd.
- 当前专利权人: Hitachi Global Storage Technologies Japan, Ltd.
- 当前专利权人地址: JP Kanagawa-ken
- 代理机构: Reed Smith LLP
- 代理商 Stanley P. Fisher, Esq.; Juan Carlos A. Marquez, Esq.
- 优先权: JP2002-244473 20020826; JP2003-006507 20030115
- 主分类号: G11B5/65
- IPC分类号: G11B5/65 ; B32B3/00 ; G11B5/147 ; G11B5/64 ; G11B5/66 ; G11B5/667 ; G11B5/70 ; G11B5/73 ; G11B5/851
摘要:
A perpendicular magnetic recording medium includes an intermediate film formed of a plurality of layers between a soft magnetic film and a perpendicular magnetization film. The intermediate film includes at least two layers, i.e., an oxygen-containing layer, or a nonmetallic element-containing layer containing nitrogen, silicon or carbon, and a metallic layer formed on a surface side of the oxygen-containing layer or the nonmetallic element-containing layer. The metallic layer includes a plurality of isolated island-shaped structures. Crystal grains of the perpendicular magnetization film are formed so as to correspond to the isolated island-shaped structures. As a result, a high recording density is obtained.
公开/授权文献
- US20040038083A1 Perpendicular magnetic recording media 公开/授权日:2004-02-26
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