发明授权
- 专利标题： Magnetic recording medium, method of fabricating magnetic recording medium, and magnetic storage
- 专利标题（中）： 磁记录介质，制造磁记录介质的方法和磁存储
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申请号： US08960751申请日： 1997-10-29
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公开(公告)号： US06197367B1公开(公告)日： 2001-03-06
- 发明人: Yoshibumi Matsuda , Akira Ishikawa , Yotsuo Yahisa , Yuzuru Hosoe , Tetsuya Kanbe , Koji Sakamoto
- 申请人： Yoshibumi Matsuda , Akira Ishikawa , Yotsuo Yahisa , Yuzuru Hosoe , Tetsuya Kanbe , Koji Sakamoto
- 优先权： JP8-292451 19961105
- 主分类号： G11B566
- IPC分类号： G11B566
摘要：
A magnetic recording medium having first undercoating layers 40, 40′ formed directly or via substrate face undercoating layers on a substrate 40, second undercoating layers 42, 42′ directly formed on the first undercoating layers 40, 40′, magnetic films 43, 43′ formed on the second undercoating layers 42, 42′, and protective films 44, 44′ formed on the magnetic films 43, 43′. Clusters having a large amount of oxygen are dispersed on the boundary face of the first and second undercoating layers. Preferably, the first undercoating layer is made of an alloy which includes two kinds of elements in which the difference between oxide formation standard free energies &Dgr;G° of the elements at the temperature of 250° C. is large.