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    • 1. 发明授权
    • Perpendicular magnetic recording medium
    • 垂直磁记录介质
    • US08507115B2
    • 2013-08-13
    • US12559365
    • 2009-09-14
    • Reiko AraiNiroyuki Nakagawa
    • Reiko AraiNiroyuki Nakagawa
    • G11B5/667
    • G11B5/732G11B5/7325G11B5/82
    • According to one embodiment, a perpendicular magnetic recording medium includes a soft magnetic underlayer having an amorphous structure or a microcrystalline structure, a first seed layer comprised of a magnetic material having an fcc crystal structure including a CoFe alloy formed on a substrate side, and a second seed layer formed on the first seed layer, the second seed layer comprised of a nonmagnetic material having an fcc crystal structure including a NiW alloy. The medium also includes an intermediate layer comprised of Ru or an alloy thereof, a magnetic recording layer, and a protective layer, wherein the layers are sequentially stacked on a substrate in the foregoing order and the protective layer is closer to the substrate than the soft magnetic underlayer. Other embodiments of magnetic recording media, and methods of fabrication, are also described.
    • 根据一个实施例,垂直磁记录介质包括具有非晶结构或微晶结构的软磁性底层,第一晶种层由具有在基板侧形成的CoFe合金的fcc晶体结构的磁性材料构成,以及 形成在第一籽晶层上的第二晶种层,第二晶种层由具有包含NiW合金的fcc晶体结构的非磁性材料构成。 该介质还包括由Ru或它们的合金构成的中间层,磁记录层和保护层,其中按照上述顺序将层依次堆叠在基板上,并且保护层比软件更靠近基板 磁性底层。 还描述了磁记录介质的其它实施例和制造方法。
    • 2. 发明申请
    • Perpendicular Magnetic Recording Medium
    • 垂直磁记录介质
    • US20100110588A1
    • 2010-05-06
    • US12559365
    • 2009-09-14
    • Reiko AraiNiroyuki Nakagawa
    • Reiko AraiNiroyuki Nakagawa
    • G11B5/82
    • G11B5/732G11B5/7325G11B5/82
    • According to one embodiment, a perpendicular magnetic recording medium includes a soft magnetic underlayer having an amorphous structure or a microcrystalline structure, a first seed layer comprised of a magnetic material having an fcc crystal structure including a CoFe alloy formed on a substrate side, and a second seed layer formed on the first seed layer, the second seed layer comprised of a nonmagnetic material having an fcc crystal structure including a NiW alloy. The medium also includes an intermediate layer comprised of Ru or an alloy thereof, a magnetic recording layer, and a protective layer, wherein the layers are sequentially stacked on a substrate in the foregoing order and the protective layer is closer to the substrate than the soft magnetic underlayer. Other embodiments of magnetic recording media, and methods of fabrication, are also described.
    • 根据一个实施例,垂直磁记录介质包括具有非晶结构或微晶结构的软磁性底层,第一晶种层由具有在基板侧形成的CoFe合金的fcc晶体结构的磁性材料构成,以及 形成在第一籽晶层上的第二晶种层,第二晶种层由具有包含NiW合金的fcc晶体结构的非磁性材料构成。 该介质还包括由Ru或它们的合金构成的中间层,磁记录层和保护层,其中按照上述顺序将层依次堆叠在基板上,并且保护层比软件更靠近基板 磁性底层。 还描述了磁记录介质的其它实施例和制造方法。