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    Magnetic signal reproduction system and magnetic signal reproduction method
    2.
    发明公开
    Magnetic signal reproduction system and magnetic signal reproduction method 有权
    磁信号再现系统和磁信号再现方法

    公开(公告)号：EP2026337A1

    公开(公告)日：2009-02-18

    申请号：EP08013472.9

    申请日：2008-07-25

    申请人： Fujifilm Corporation ,  TDK Corporation

    发明人： Noguchi, Hitoshi ,  Endo, Yasushi ,  Shimizu, Osamu ,  Yoshida, Makoto ,  Maejima, Kazuhiko ,  Kawai, Mitsuyoshi

    IPC分类号： G11B5/62 ,  G11B5/708

    CPC分类号： G11B5/70 ,  G11B5/00826 ,  G11B5/29 ,  G11B5/3106 ,  G11B5/3906 ,  G11B5/70678 ,  G11B5/7085 ,  G11B5/71 ,  G11B5/714

    摘要： The magnetic signal reproduction system comprises a magnetic recording medium comprising a magnetic layer comprising a ferromagnetic powder and a binder on a nonmagnetic support and a reproduction head, wherein a number of protrusions equal to or greater than 10 nm in height on the magnetic layer surface, as measured by an atomic force microscope, ranges from 50 to 2500/10,000 µm 2 , a quantity of lubricant on the magnetic layer surface, denoted as a surface lubricant index, ranges from 0.5 to 5.0, a surface abrasive occupancy of the magnetic layer ranges from 2 to 20 percent, the reproduction head is a magnetoresistive magnetic head comprising a spin-valve layer, the spin-valve layer comprises a magnetization free layer, a magnetization pinned layer and an antiferromagnetic layer, and the antiferromagnetic layer is comprised of alloy comprising iridium and manganese, and the reproduction head comes in sliding contact with the magnetic recording medium during signal reproduction.

    摘要翻译： 该磁信号再现系统包括磁记录介质，该磁记录介质包括在非磁性载体和再现头上的包括铁磁粉末和粘合剂的磁性层，其中在磁性层表面上的高度等于或大于10nm的多个突起， 如通过原子力显微镜测量的，范围从50至2500 /10,000μm2，磁性层表面上的润滑剂量（表面润滑指数）表示为0.5至5.0，磁性层的表面磨料占有率为 2％到20％，再现头是包括自旋阀层的磁阻磁头，自旋阀层包括磁化自由层，磁化固定层和反铁磁层，并且反铁磁层由包含铱 和锰，并且再现头在信号再现期间与磁记录介质滑动接触。