发明授权
- 专利标题: Perpendicular magnetic recording medium 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: US10650809申请日: 2003-08-29
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公开(公告)号: US06881504B2公开(公告)日: 2005-04-19
- 发明人: Tomoo Yamamoto , Ichiro Tamai , Akira Ishikawa
- 申请人: Tomoo Yamamoto , Ichiro Tamai , Akira Ishikawa
- 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: JP2000-296764 20000928
- 主分类号: C23C14/06
- IPC分类号: C23C14/06 ; G11B5/64 ; G11B5/65 ; G11B5/66 ; G11B5/667 ; G11B5/73 ; G11B5/738 ; H01F10/26 ; H01F10/30 ; G11B5/70
摘要:
A large-capacity magnetic storage apparatus is disclosed, capable of performing ultra-high density magnetic recording of 50 gigabits or more per 1 square inch. In a perpendicular magnetic recording medium having a non-magnetic intermediate layer and a magnetic recording layer sequentially formed, the non-magnetic intermediate layer is composed of a layer having a face-centered cubic structure and containing a non-magnetic elements excluding Pt. Specifically, the intermediate layer mainly contains at least one selected from the group of elements constituted of Al, Cu, Rh, Pd, Ag, Ir and Au, and is composed of a film having a face-centered cubic (f. c. c.) structure. The magnetic recording layer contains at least Co, Cr and Pt, and is composed of a film having a hexagonal close-packed (h. c. p.) structure. More preferably, a non-magnetic h. c. p. intermediate layer is provided between the non-magnetic intermediate layer and the magnetic recording layer.
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