- 专利标题: Magnetic recording medium
-
申请号: US11123065申请日: 2005-05-06
-
公开(公告)号: US20050208341A1公开(公告)日: 2005-09-22
- 发明人: Takashi Morikawa , Teiichiro Umezawa , Hiroshi Tomiyasu , Masafumi Ishiyama
- 申请人: Takashi Morikawa , Teiichiro Umezawa , Hiroshi Tomiyasu , Masafumi Ishiyama
- 专利权人: HOYA CORPORATION, HOYA MAGNETICS SINGAPORE PTE. LTD.
- 当前专利权人: HOYA CORPORATION, HOYA MAGNETICS SINGAPORE PTE. LTD.
- 优先权: JP48421/2002 20020225
- 主分类号: G11B5/72
- IPC分类号: G11B5/72 ; G11B5/64
摘要:
In a magnetic recording medium which comprises a substrate (1), a magnetic layer (3) formed on the substrate, a carbon-based protection layer (4) comprising carbon and formed on the magnetic layer, and a lubrication layer (5) formed on the carbon-based protection layer, the carbon-based protection layer comprises a hydrogenated carbon protection layer (4a) facing the magnetic layer and a nitrogenated carbon protection layer (4b) facing the lubrication layer. The hydrogenated carbon protection layer (4a) comprises carbon and hydrogen. The nitrogenated carbon protection layer (4b) includes no hydrogen but comprises carbon and nitrogen.
公开/授权文献
信息查询
IPC分类: