发明授权
- 专利标题: Magnetically anisotropic recording medium
- 专利标题(中): 磁各向异性记录介质
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申请号: US121222申请日: 1987-11-16
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公开(公告)号: US4847161A公开(公告)日: 1989-07-11
- 发明人: Gunter Rupp
- 申请人: Gunter Rupp
- 申请人地址: DEX Berlin & Munich
- 专利权人: Siemens Aktiengesellschaft
- 当前专利权人: Siemens Aktiengesellschaft
- 当前专利权人地址: DEX Berlin & Munich
- 优先权: DEX3643609 19861219
- 主分类号: G11B5/64
- IPC分类号: G11B5/64 ; G11B5/65 ; G11B5/66 ; G11B5/667 ; G11B5/716 ; G11B5/73
摘要:
The disclosure is directed to a magnetically anisotropic recording medium (2) containing a disc-shaped substrate (3) of nonmagnetic material, on the flat side (4) of which is applied a thin lower layer (8) of Si, Ge or Ti, and thereon a Co-containing alloy with vertical magnetic anisotropy. This recording medium is to assure a large signal level without the need for a special magnetically soft substrate. For this purpose, a sandwich-like multilayer structure (7) is provided according to the invention, in which at least three storage layers (10 to 13) of the Co-containing alloy with a respective thickness (d.sub.s) of at most 100 nm are separated by comparatively thinner intermediate layers (15 to 17) of the Si, Ge and/or Ti. The recording medium is advantageously provided for discs of data memories with perpendicular (vertical) magnetization.
公开/授权文献
- US06164434A Apparatus for transporting profiles 公开/授权日:2000-12-26
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