发明申请
- 专利标题: Magnetic recording medium, magnetic storage and method for reproducing information from magnetic recording medium
- 专利标题(中): 磁记录介质,磁存储器和用于从磁记录介质再现信息的方法
-
申请号: US10949034申请日: 2004-09-24
-
公开(公告)号: US20050146992A1公开(公告)日: 2005-07-07
- 发明人: Akihiro Inomata , Antony Ajan , Jun Taguchi , Koji Matsumoto , Wataru Yamagishi
- 申请人: Akihiro Inomata , Antony Ajan , Jun Taguchi , Koji Matsumoto , Wataru Yamagishi
- 专利权人: Fujitsu Limited
- 当前专利权人: Fujitsu Limited
- 优先权: JP2004-000632 20040105; JP2004-061225 20040304
- 主分类号: G11B5/02
- IPC分类号: G11B5/02 ; G11B5/66 ; G11B5/851 ; G11B11/10 ; G11B11/105 ; G11B11/00
摘要:
A magnetic recording medium includes a first magnetic layer; and a second magnetic layer formed on the first magnetic layer. The first magnetic layer and the second magnetic layer make exchange coupling therebetween and also, have their magnetizing direction in anti-parallel to one another. A net residual area magnetization of the first magnetic layer and the second magnetic layer is expressed by the following formula: |Mr1×t1−Mr2×t2| where Mr1 and Mr2 denote respective residual magnetizations of the first magnetic layer and the second magnetic layer, and t1 and t2 denote respective film thicknesses of them; and the net area magnetization at a first temperature is larger than the net area magnetization at a second temperature lower than the first temperature.
公开/授权文献
信息查询
IPC分类: