发明授权
- 专利标题: Perpendicular magnetic recording media and magnetic storage apparatus using the same
- 专利标题(中): 垂直磁记录介质及使用其的磁存储装置
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申请号: US09785416申请日: 2001-02-20
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公开(公告)号: US06759148B2公开(公告)日: 2004-07-06
- 发明人: Kiwamu Tanahashi , Atsushi Kikugawa , Yukio Honda , Masaaki Futamoto , Akira Ishikawa
- 申请人: Kiwamu Tanahashi , Atsushi Kikugawa , Yukio Honda , Masaaki Futamoto , Akira Ishikawa
- 优先权: JP2000-266093 20000901
- 主分类号: G11B562
- IPC分类号: G11B562
摘要:
A double layer perpendicular magnetic recording medium having a high medium S/N ratio at a recording density of 50 Gb/in2 or higher and a magnetic storage apparatus with a lower error rate and excellent reliability are obtained with a structure having soft magnetic underlayer 12, an intermediate layer 13 and a perpendicular magnetic recording layer 14 are sequentially formed on a substrate 11. The, intermediate layer 13 is made to be a non-magnetic amorphous alloy, in which Ni is a main component and Zr is contained, and the soft magnetic underlayer 12 is constituted of ferromagnetic nano-crystals precipitated by annealing.
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