发明授权
- 专利标题: Magnetic recording medium with columar magnetic layer
- 专利标题(中): 带有磁性层的磁记录介质
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申请号: US10885185申请日: 2004-07-06
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公开(公告)号: US07241519B2公开(公告)日: 2007-07-10
- 发明人: Junichi Tachibana , Yuichi Arisaka , Hiroshi Mizuno , Takuya Ito
- 申请人: Junichi Tachibana , Yuichi Arisaka , Hiroshi Mizuno , Takuya Ito
- 申请人地址: JP Tokyo
- 专利权人: Sony Corporation
- 当前专利权人: Sony Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: Sonnenschein Nath & Rosenthal LLP
- 优先权: JPP2003-271388 20030707; JPP2003-322085 20030912
- 主分类号: G11B5/65
- IPC分类号: G11B5/65 ; G11B5/68 ; G11B5/714
摘要:
Provided is a magnetic recording medium capable of achieving higher density recording. The magnetic recording medium comprises a magnetic layer formed on a non-magnetic base through vacuum oblique evaporation. The magnetic layer includes a plurality of columns in which 3 to 7 ferromagnetic particles with an average diameter of 5 to 10 nm are arranged in a line, and non-magnetic particles are disposed between columns so as to separate the columns from one another. A value Y/X defined as a ratio of an average value Y of a distance between the centers of adjacent columns in a film in-plane direction to an average value X of a distance between the centers of adjacent columns in a film thickness direction is preferably 0.5 or more.
公开/授权文献
- US20050008899A1 Magnetic recording medium 公开/授权日:2005-01-13