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    GIANT SPIN-SEEBECK EFFECT INDUCED MAGNON TRANSFER TORQUE-ASSISTED MAMR
    21.
    发明申请
    GIANT SPIN-SEEBECK EFFECT INDUCED MAGNON TRANSFER TORQUE-ASSISTED MAMR 审中-公开

    公开(公告)号：US20200176022A1

    公开(公告)日：2020-06-04

    申请号：US16451744

    申请日：2019-06-25

    申请人： Western Digital Technologies, Inc.

    发明人： Zhanjie LI ,  Suping SONG ,  Michael Kuok San HO

    IPC分类号： G11B5/21 ,  G11B5/11

    摘要： A magnetic recording device includes a main pole, a coil around the main pole, a trailing shield, and a spin torque oscillation device between the main pole and the trailing shield. The spin torque oscillation device includes one or more first layers, a spacer layer, and a field generation layer. The one or more first layers are over the main pole. The one or more first layers have a first heat conductance or include a low-heat-conductance material. The spacer layer is over the one or more first layers. The field generation layer is over the spacer layer. A heat sink is in contact with the trailing shield. The heat sink has a second heat conductance or includes a high-heat-conductance material. The second heat conductance of the heat sink is higher than the first heat conductance of the one or more first layers.

    Thermally-assisted magnetic recording head
    23.
    发明授权
    Thermally-assisted magnetic recording head 有权
    热辅助磁记录头

    公开(公告)号：US09165569B1

    公开(公告)日：2015-10-20

    申请号：US14276409

    申请日：2014-05-13

    申请人： TDK CORPORATION

    发明人： Takafumi Kobayashi ,  Susumu Aoki ,  Kosuke Tanaka ,  Tsutomu Chou ,  Koji Shimazawa

    IPC分类号： G11B5/02 ,  G11B5/127 ,  G11B5/21 ,  G11B5/39 ,  G11B5/235 ,  G11B5/48 ,  G11B5/60 ,  G11B5/00

    CPC分类号： G11B5/235 ,  G02B6/00 ,  G02B6/122 ,  G11B5/3116 ,  G11B5/314 ,  G11B5/3163 ,  G11B5/6088 ,  G11B2005/0021

    摘要： Thermally-assisted magnetic recording head, includes: a magnetic pole having an end exposed on an air-bearing surface; a waveguide; a plasmon generator having a first and second region, first region extending backward from the air-bearing surface to a first position, second region being coupled with the first region at the first position, extending backward from first position, and having a width in a track-width direction, and width in the track-width direction of second region being larger than a width in the track-width direction of first region; an adhesion layer having an end exposed on the air-bearing surface and a first adhesion region, the first adhesion region being in close contact with an end face in the track-width direction of first region; and a cladding layer located around plasmon generator and adhesion layer. Adhesion force between adhesion layer and plasmon generator is greater than adhesion force between cladding layer and plasmon generator.

    摘要翻译： 热辅助磁记录头包括：具有暴露在空气轴承表面上的端部的磁极; 波导; 具有第一和第二区域的等离子体发生器，从空气轴承表面向后延伸到第一位置的第一区域，第二区域与第一位置处的第一区域耦合，从第一位置向后延伸，并且具有 轨道宽度方向和第二区域的轨道宽度方向上的宽度大于第一区域的轨道宽度方向上的宽度; 具有暴露在空气轴承表面上的端部和第一粘附区域的粘合层，所述第一粘合区域与第一区域的轨道宽度方向上的端面紧密接触; 以及位于等离子体发生器和粘附层周围的包覆层。 粘附层和等离子体发生器之间的粘附力大于包层和等离子体发生器之间的粘附力。

    Magnetic head including an apex portion with two chamfered portions having optimized angles
    26.
    发明授权
    Magnetic head including an apex portion with two chamfered portions having optimized angles 失效
    磁头包括具有两个具有最佳角度的倒角部分的顶点部分

    公开(公告)号：US5572390A

    公开(公告)日：1996-11-05

    申请号：US590962

    申请日：1996-01-24

    申请人： Kazuhiro Saito ,  Osamu Murata ,  Tatsushi Shimizu

    发明人： Kazuhiro Saito ,  Osamu Murata ,  Tatsushi Shimizu

    IPC分类号： G11B5/21 ,  G11B5/23 ,  G11B5/31

    CPC分类号： G11B5/21 ,  G11B5/23 ,  G11B5/31 ,  G11B5/3116

    摘要： A magnetic head is provided with an apex portion having a first and second chamfered portion, both formed in a C core. The first chamfered portion has a first apex angle .alpha. at a position corresponding to a predetermined gap depth. The first chamfered portion also has a predetermined apex length. The second chamfered portion is contiguous to the first chamfered portion and has second apex angle .beta. which is smaller than the first apex angle .alpha.. The first apex angle .alpha. is greater than or equal to 70.degree. and less than 80.degree..

    摘要翻译： 磁头设置有具有第一和第二倒角部分的顶点部分，两者都形成在C芯中。 第一倒角部分在对应于预定间隙深度的位置处具有第一顶角α。 第一倒角部分也具有预定的顶点长度。 第二倒角部分与第一倒角部分邻接并且具有小于第一顶角α的第二顶角β。 第一顶角α大于或等于70°，小于80°。

    Method of manufacturing a laminated high frequency magnetic transducer
    29.
    发明授权
    Method of manufacturing a laminated high frequency magnetic transducer 失效
    叠层高频磁换能器的制造方法

    公开(公告)号：US5267392A

    公开(公告)日：1993-12-07

    申请号：US845894

    申请日：1992-03-04

    申请人： Beverley R. Gooch ,  George R. Varian

    发明人： Beverley R. Gooch ,  George R. Varian

    IPC分类号： G11B5/127 ,  G11B5/147 ,  G11B5/21 ,  G11B5/265 ,  G11B5/42

    CPC分类号： G11B5/1475 ,  G11B5/21 ,  Y10T29/49048 ,  Y10T29/49064

    摘要： A magnetic transducer for reproducing/recording high frequency signals with a magnetic tape medium includes a pair of opposed transducer head halves separated by an insulation gap and bonded together to form a Y-shaped pole structure, each half including a laminated at least partially ferromagnetic core portion bounded on opposite surfaces with conductive layers, each of which forms a winding coil portion. Each core section is formed as one-half of a Y-shaped cross-sectional configuration having a leg portion and an angularly disposed arm portion, the distal end of which is capped with a block-shaped ferromagnetic pole tip in magnetic path relation therewith, the two pole tips lying in a common plane transverse to the plane of the gap. The conductive layers on the outer and inner surfaces of the laminated core section form outer and inner conductors which, when conductively interconnected, such as by jumpers, are configured to form a one or two turn coil for the transducer. The inner conductor is of an inverted generally U-shaped configuration with the bight portion of the two inner conductors passing through, and substantially filling, the openings of the Y-shape on opposite sides of the insulation gap layer beneath the pole pieces.The method of fabricating the magnetic transducer generally comprises the steps of forming at least two generally identical transducer head halves, each having generally one half of a Y-shape, commencing with providing a substrate having a surface shaped to define the core configuration and having a band shaped to define the pole configurations; applying a conductive layer to the surface for providing an outer coil conductor; alternately applying laminae of insulating and magnetic material to form a laminated core section; applying a conductive layer over an insulation layer about the face and side edges of the laminated core section for providing an inner generally U-shaped coil conductor; forming, in the band, a pole piece of magnetic material at the distal end of the arm of the core section; bonding two such transducer head halves in facing relation to from a Y-shaped transducer with the bonding material being insulating and forming the gap between the two pole pieces.