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公开(公告)号:US06168861A
公开(公告)日:2001-01-02
申请号:US09188677
申请日:1998-11-10
申请人: Qixu Chen , Xing Song , Charles Leu , Rajiv Yadau Ranjan , Ga-Lane Chen
发明人: Qixu Chen , Xing Song , Charles Leu , Rajiv Yadau Ranjan , Ga-Lane Chen
IPC分类号: G11B566
CPC分类号: G11B5/66 , Y10S428/90 , Y10T428/26 , Y10T428/265
摘要: A high areal density magnetic recording medium with high remanent coercivity and high signal-to-noise ratio is formed with dual magnetic layers, the first or lower magnetic layer having a higher saturation magnetization than the second or upper magnetic layer. Embodiments include first and second magnetic layers containing Co and Pt, wherein the first magnetic layer comprises less platinum than the second, e.g., a first magnetic layer of Co15%Cr8%Pt4%Ta and a second magnetic layer of Co15%Cr11%Pt4%Ta.
摘要翻译: 形成具有高剩磁矫顽力和高信噪比的高密度磁记录介质,具有双磁性层,第一或下磁层具有比第二或上磁层更高的饱和磁化强度。 实施例包括含有Co和Pt的第一和第二磁性层,其中第一磁性层包含比第二磁性层少的铂,例如Co15%Cr8%Pt4%Ta的第一磁性层和Co15%Cr11%Pt4%的第二磁性层, Ta