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34 条记录 (耗时 0.018 秒)

    Current-perpendicular-to-the-plane (CPP) magnetoresistive (MR) sensor with improved hard magnet biasing structure
    31.
    发明授权
    Current-perpendicular-to-the-plane (CPP) magnetoresistive (MR) sensor with improved hard magnet biasing structure 有权
    具有改进的硬磁体偏置结构的电流垂直平面（CPP）磁阻（MR）传感器

    公开(公告)号：US08218270B1

    公开(公告)日：2012-07-10

    申请号：US13077815

    申请日：2011-03-31

    申请人： Alexander M. Zeltser ,  Stefan Maat

    发明人： Alexander M. Zeltser ,  Stefan Maat

    IPC分类号： G11B5/39

    CPC分类号： G11B5/3932 ,  G01R33/098 ,  H01L43/08 ,  H01L43/10

    摘要： A hard magnet biasing structure for a CPP-GMR or CPP-TMR read head for a magnetic recording disk drive is located between the two sensor shields and abutting the side edges of the sensor free layer. An insulating layer is located between the biasing structure and the lower shield and the side edges of the free layer. The biasing structure includes a seed layer of either Ir or Ru, a layer of ferromagnetic chemically-ordered FePt alloy hard bias layer on the seed layer, and a Ru or Ru/Ir capping layer on the FePt alloy hard bias layer. The FePt alloy has a face-centered-tetragonal structure with its c-axis generally in the plane of the layer. The relatively thin seed layer and capping layer allow the biasing structure to be made very thin while still permitting the FePt alloy hard bias layer to have high coercivity (Hc), a high remanent magnetization-thickness product (Mrt) and a high squareness (S=Mrt/Ms).

    摘要翻译： 用于磁记录盘驱动器的CPP-GMR或CPP-TMR读取头的硬磁体偏置结构位于两个传感器屏蔽之间并邻接传感器自由层的侧边缘。 绝缘层位于偏置结构和下屏蔽之间以及自由层的侧边缘之间。 偏置结构包括Ir或Ru的种子层，种子层上的铁磁化学有序FePt合金硬偏置层的层，以及FePt合金硬偏压层上的Ru或Ru / Ir覆盖层。 FePt合金具有面向中心的四边形结构，其c轴通常在层的平面中。 相对薄的种子层和覆盖层允许偏置结构非常薄，同时仍允许FePt合金硬偏置层具有高矫顽力（Hc），高剩余磁化厚度乘积（Mrt）和高矩形度（S = Mrt / Ms）。

    Perpendicular magnetic recording write head with improved laminated main pole
    32.
    发明授权
    Perpendicular magnetic recording write head with improved laminated main pole 有权
    垂直磁记录头与改进的层叠主极

    公开(公告)号：US08139321B2

    公开(公告)日：2012-03-20

    申请号：US12759508

    申请日：2010-04-13

    申请人： Alexander M. Zeltser ,  Stefan Maat

    发明人： Alexander M. Zeltser ,  Stefan Maat

    IPC分类号： G11B5/31

    CPC分类号： G11B5/147 ,  G11B5/3116 ,  G11B5/3146 ,  G11B5/315

    摘要： A perpendicular magnetic recording write head has an improved antiferromagnetically-coupled laminated main pole (MP) formed on a substrate. The MP has two ferromagnetic multilayers, each comprising at least one FeCo/NiFe/FeCo ferromagnetic trilayer, antiferromagnetically coupled across an antiferromagnetically coupling (AFC) film consisting essentially of ruthenium (Ru). The MP has a NiFe layer directly above the AFC film, on the side of the AFC film opposite the side facing the substrate, and in contact with the Ru AFC film and the lower FeCo layer of the upper multilayer. There is no NiFe layer directly below the Ru AFC film so the side of the AFC film facing the substrate is in direct contact with the upper FeCo layer of the lower multilayer.

    摘要翻译： 垂直磁记录写头具有形成在基板上的改进的反铁磁耦合叠层主极（MP）。 MP具有两个铁磁多层，每层包含至少一个FeCo / NiFe / FeCo铁磁性三层膜，反向铁磁耦合在基本上由钌（Ru）组成的反铁磁耦合（AFC）膜上。 MP具有在AFC膜正上方的NiFe层，在与基板相对的一侧的AFC膜侧，与Ru AFC膜和上部多层的下部FeCo层接触。 在Ru AFC膜的正下方没有NiFe层，因此面向衬底的AFC膜的侧面与下部多层的上部FeCo层直接接触。