发明授权
- 专利标题: Magnetic recording medium with low temperature seedlayer for high signal-to-noise ratio
- 专利标题(中): 磁记录介质采用低温种子层,信噪比高
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申请号: US188683申请日: 1998-11-10
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公开(公告)号: US6139951A公开(公告)日: 2000-10-31
- 发明人: Qixu Chen , Xing Song , Charles Leu , Rajiv Ranjan
- 申请人: Qixu Chen , Xing Song , Charles Leu , Rajiv Ranjan
- 申请人地址: CA Scotts Valley
- 专利权人: Seagate Technology LLC
- 当前专利权人: Seagate Technology LLC
- 当前专利权人地址: CA Scotts Valley
- 主分类号: G11B5/73
- IPC分类号: G11B5/73 ; G11B5/84 ; G11B5/66
摘要:
A magnetic recording medium exhibiting high remanent coercivity and low noise is produced by depositing a first NiAl seedlayer on a non-magnetic substrate, e.g., glass, ceramic or glass-ceramic material, at a relatively low temperature, and subsequently depositing a second NiAl seedlayer on the first seedlayer at a relatively higher temperature. Embodiments include depositing a first NiAl seedlayer at a temperature less than about 120.degree. C., e.g., less than about 100.degree. C., and depositing a second NiAl seedlayer thereon at a temperature greater than about 200.degree. C., e.g. greater than about 230.degree. C. Embodiments also include depositing a Cr-alloy underlayer, CrV, on the second seedlayer.
公开/授权文献
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