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    Anti-ferromagnetically coupled granular-continuous magnetic recording media
    3.
    发明授权
    Anti-ferromagnetically coupled granular-continuous magnetic recording media 有权
    反铁磁耦合颗粒连续磁记录介质

    公开(公告)号：US07201977B2

    公开(公告)日：2007-04-10

    申请号：US10806114

    申请日：2004-03-23

    申请人： Shaoping Li ,  Kaizhong Gao ,  Lei Wang ,  Wenzhong Zhu

    发明人： Shaoping Li ,  Kaizhong Gao ,  Lei Wang ,  Wenzhong Zhu

    IPC分类号： G11B5/66

    CPC分类号： G11B5/732 ,  G11B5/653 ,  G11B5/656 ,  G11B5/66 ,  G11B5/667 ,  G11B5/725

    摘要： An anti-ferromagnetically coupled, granular-continuous (“AFC-GC”) magnetic recording medium having increased thermal stability, writability, and signal-to-medium noise ratio (“SMNR”), comprising a layer stack including, in sequence from a surface of a non-magnetic substrate: (a) a continuous ferromagnetic stabilizing layer; (b) a non-magnetic spacer layer; and (c) a granular ferromagnetic recording layer; wherein: (i) the continuous ferromagnetic stabilizing and granular ferromagnetic recording layers are anti-ferromagnetically coupled across the non-magnetic spacer layer, the amount of anti-ferromagnetic coupling preselected to ensure magnetic relaxation after writing; (ii) lateral interactions in the granular, ferromagnetic recording layer are substantially completely eliminated or suppressed; and (iii) the exchange coupling strength in the continuous, ferromagnetic stabilizing layer is preselected to be slightly larger than the strength of the anti-ferromagnetic coupling provided by the non-magnetic spacer layer to thereby enhance thermal stability of the recording bits.

    摘要翻译： 具有增加的热稳定性，可写性和信噪比（“SMNR”）的反铁磁耦合的粒状连续（“AFC-GC”）磁记录介质，包括层叠，其包括从 非磁性表面

    Anti-ferromagnetically coupled granular-continuous magnetic recording media
    7.
    发明申请
    Anti-ferromagnetically coupled granular-continuous magnetic recording media 有权
    反铁磁耦合颗粒连续磁记录介质

    公开(公告)号：US20050214585A1

    公开(公告)日：2005-09-29

    申请号：US10806114

    申请日：2004-03-23

    申请人： Shaoping Li ,  Kaizhong Gao ,  Lei Wang ,  Wenzhong Zhu

    发明人： Shaoping Li ,  Kaizhong Gao ,  Lei Wang ,  Wenzhong Zhu

    IPC分类号： G11B5/64 ,  G11B5/66 ,  G11B5/72 ,  G11B5/725 ,  G11B5/73

    CPC分类号： G11B5/732 ,  G11B5/653 ,  G11B5/656 ,  G11B5/66 ,  G11B5/667 ,  G11B5/725

    摘要： An anti-ferromagnetically coupled, granular-continuous (“AFC-GC”) magnetic recording medium having increased thermal stability, writability, and signal-to-medium noise ratio (“SMNR”), comprising a layer stack including, in sequence from a surface of a non-magnetic substrate: (a) a continuous ferromagnetic stabilizing layer; (b) a non-magnetic spacer layer; and (c) a granular ferromagnetic recording layer; wherein: (i) the continuous ferromagnetic stabilizing and granular ferromagnetic recording layers are anti-ferromagnetically coupled across the non-magnetic spacer layer, the amount of anti-ferromagnetic coupling preselected to ensure magnetic relaxation after writing; (ii) lateral interactions in the granular, ferromagnetic recording layer are substantially completely eliminated or suppressed; and (iii) the exchange coupling strength in the continuous, ferromagnetic stabilizing layer is preselected to be slightly larger than the strength of the anti-ferromagnetic coupling provided by the non-magnetic spacer layer to thereby enhance thermal stability of the recording bits.

    摘要翻译： 具有增加的热稳定性，可写性和信噪比（“SMNR”）的反铁磁耦合的粒状连续（“AFC-GC”）磁记录介质，包括层叠，其包括从 非磁性基板的表面：（a）连续的铁磁稳定层; （b）非磁性间隔层; 和（c）粒状铁磁记录层; 其中：（i）连续的铁磁稳定和粒状铁磁记录层跨过非磁性间隔层进行反铁磁耦合，预先选择反铁磁性耦合量以确保写入后的磁弛豫; （ii）颗粒状铁磁记录层中的横向相互作用基本上完全消除或抑制; 并且（iii）连续的铁磁稳定层中的交换耦合强度被预先选择为略大于由非磁性间隔层提供的反铁磁耦合的强度，从而提高记录位的热稳定性。

    Layered perpendicular writer with pole tip partially embedded in yoke
    10.
    发明授权
    Layered perpendicular writer with pole tip partially embedded in yoke 有权
    分层垂直写入器，极尖部分嵌入磁轭

    公开(公告)号：US07382574B2

    公开(公告)日：2008-06-03

    申请号：US11006202

    申请日：2004-12-06

    申请人： Shaoping Li ,  Chunhong Hou ,  Lei Wang

    发明人： Shaoping Li ,  Chunhong Hou ,  Lei Wang

    IPC分类号： G11B5/147

    CPC分类号： G11B5/1278

    摘要： A perpendicular writer includes a write coil and a main pole having a pole tip for conducting magnetic flux to write data to a magnetic medium. The pole tip includes a plurality of magnetic layers that are magnetically coupled and biased so that their magnetic moment orientations are substantially parallel to an external surface when no write current is applied to the write coil. The pole tip is partially embedded in the yoke, such that portions of the yoke surrounding the pole tip help direct magnetic flux to the pole tip. The pole tip extends beyond the yoke, with a first end located outside the yoke and a second end located within the yoke.

    摘要翻译： 垂直写入器包括写入线圈和具有用于传导磁通以将数据写入磁性介质的极尖的主极。 极尖包括磁耦合和偏置的多个磁性层，使得当没有写入电流施加到写入线圈时，它们的磁矩取向基本上平行于外部表面。 极尖部分地嵌入在轭中，使得围绕极端部的轭的部分有助于将磁通量引导到极尖。 磁极尖端延伸超过磁轭，第一端位于磁轭外部，第二端位于磁轭内。