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    Perpendicular magnetic recording medium and process for production of the same
    2.
    发明授权
    Perpendicular magnetic recording medium and process for production of the same 失效
    垂直磁记录介质及其制作方法

    公开(公告)号：US5492774A

    公开(公告)日：1996-02-20

    申请号：US914571

    申请日：1992-07-20

    申请人： Yasuo Tateno ,  Hiroji Naruse ,  Mayumi Abe

    发明人： Yasuo Tateno ,  Hiroji Naruse ,  Mayumi Abe

    IPC分类号： G11B5/00 ,  G11B5/008 ,  G11B5/09 ,  G11B5/127 ,  G11B5/64 ,  G11B5/85 ,  G11B5/66 ,  B05D5/12 ,  G11B5/23

    CPC分类号： G11B5/656 ,  G11B5/00 ,  G11B5/0086 ,  G11B5/09 ,  G11B5/1278 ,  G11B5/85 ,  Y10S428/90

    摘要： A perpendicular magnetic recording medium having a magnetic layer comprised of a metal magnetic thin film on a nonmagnetic support. The half-value width of the switching field distribution obtained from a remanent magnetization curve in the intrinsic easy direction of magnetization (axis of easy magnetization from which shape magnetic anistrophy is removed) of the magnetic layer is no more than 40 kA/m.Rectangular wave signals are recorded or reproduced on or from a Co--O type perpendicular magnetic recording medium with a direction .theta..sub.E of the axis of easy magnetization tilted in a range of 10.degree. to 45.degree. from the direction perpendicular to the plane of the film of the magnetic layer using a ring type magnetic head with a gap length Lg of not more than 0.18 .mu.m.

    摘要翻译： 一种具有由非磁性载体上的金属磁性薄膜构成的磁性层的垂直磁记录介质。 在磁性层的固有易磁化方向（容易磁化的形状磁性不透明度的除去轴）上的剩余磁化曲线获得的开关场分布的半值宽度不大于40kA / m。 矩形波信号在Co-O型垂直磁记录介质上记录或再现，其中容易磁化轴的方向θE从垂直于膜平面的方向倾斜在10°至45°的范围内 使用间隙长度Lg不大于0.18μm的环型磁头。