发明授权
- 专利标题: Magnetic recording medium having ion-implanted parts
- 专利标题(中): 具有离子注入部件的磁记录介质
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申请号: US12378894申请日: 2009-02-20
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公开(公告)号: US08361640B2公开(公告)日: 2013-01-29
- 发明人: Toshinori Ono , Hiroshi Kanai , Tatsuysa Hinoue , Hiroyuki Suzuki , Hiroshi Inaba
- 申请人: Toshinori Ono , Hiroshi Kanai , Tatsuysa Hinoue , Hiroyuki Suzuki , Hiroshi Inaba
- 申请人地址: NL Amsterdam
- 专利权人: HGST Netherlands B.V.
- 当前专利权人: HGST Netherlands B.V.
- 当前专利权人地址: NL Amsterdam
- 优先权: JP2008-042021 20080222
- 主分类号: G11B5/66
- IPC分类号: G11B5/66
摘要:
Embodiments of the present invention provide recording area separated magnetic recording media (DTMs, BPMs) allowing magnetic heads to fly lower. According to one embodiment, the recording area separated magnetic recording media are configured so that magnetic recording layers have parts with the relatively higher element ratio of a ferromagnetic material, and parts with the lower element ratio of the ferromagnetic material, occurring periodically in the in-plane direction, and the average height from the substrate surface of the parts with the relatively higher element ratio of a ferromagnetic material is higher than the average height from the substrate surface of the parts with the lower element ratio of the ferromagnetic material. In producing recording area separated magnetic recording media with the element ratio of a ferromagnetic material relatively lowered by ion implantation, preliminarily etching the part to be ion implanted makes the height after ion implantation relatively lower than the non-implanted part.
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