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公开(公告)号：US20100215992A1
公开(公告)日：2010-08-26
申请号：US12709845
申请日：2010-02-22
IPC分类号： G11B5/706
CPC分类号： G11B5/7325 , G11B5/65
摘要： A magnetic recording medium used for perpendicular magnetic recording, the magnetic recording medium comprising: a substrate having a first surface and a second surface opposite to the first surface; a magnetic recording medium constituent layer formed on the first surface of the substrate, the magnetic recording medium constituent layer including at least a magnetic recording layer; a non-magnetic metal film formed on the second surface of the substrate; and a carbon-based protective film formed on the non-magnetic metal film.
摘要翻译： 一种用于垂直磁记录的磁记录介质，所述磁记录介质包括：具有第一表面和与所述第一表面相对的第二表面的基底; 形成在所述基板的第一表面上的磁记录介质构成层，所述磁记录介质构成层至少包括磁记录层; 形成在所述基板的第二表面上的非磁性金属膜; 以及形成在非磁性金属膜上的碳类保护膜。
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公开(公告)号：US20100196619A1
公开(公告)日：2010-08-05
申请号：US12758195
申请日：2010-04-12
申请人： Masafumi ISHIYAMA
发明人： Masafumi ISHIYAMA
IPC分类号： G11B5/84
CPC分类号： G11B5/8408 , G11B5/64 , G11B5/72 , Y10T29/49702
摘要： In a magnetic disk having a magnetic layer, a protection layer, and a lubrication layer formed on a substrate in this order, a surface free energy γS of a surface of the magnetic disk derived by an extended Fowkes equation is greater than 0 and no greater than 24 mN/m. γSd (dispersion force component of surface free energy) forming the surface free energy γS is greater than 0 and no greater than 17 mN/m, γSp (dipole component of surface free energy) forming the surface free energy γS is greater than 0 and no greater than 1 mN/m, and γSh (hydrogen bonding force component of surface free energy) forming the surface free energy γS is greater than 0 and no greater than 6 mN/m.
摘要翻译： 在依次形成在基板上的具有磁性层，保护层和润滑层的磁盘中，通过扩展Fowkes方程导出的磁盘表面的表面自由能γS大于0而不大于 超过24 mN / m。 形成表面自由能γS的γSd（表面自由能的分散力分量）大于0且不大于17mN / m，形成表面自由能γS的γSp（表面自由能的偶极子成分）大于0，并且不 大于1mN / m，形成表面自由能γS的γSh（表面自由能的氢键力分量）大于0且不大于6mN / m。
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