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    Film and Method for BiSbX (012) Texture for SOT Devices
    31.
    发明申请
    Film and Method for BiSbX (012) Texture for SOT Devices 有权

    公开(公告)号：US20240412759A1

    公开(公告)日：2024-12-12

    申请号：US18229772

    申请日：2023-08-03

    Applicant: Western Digital Technologies, Inc.

    Inventor： Quang LE ,  Brian R. YORK ,  Cherngye HWANG ,  Xiaoyong LIU ,  Michael A. GRIBELYUK ,  Son T. LE ,  Hisashi TAKANO

    IPC: G11B5/39 ,  G11B5/187

    Abstract: The present disclosure generally relates to spin-orbit torque (SOT) device comprising a bismuth antimony (BiSb) layer. The SOT device comprises a seed layer and a BiSb layer having a (012) orientation. The seed layer comprises at least one of an amorphous/nanocrystalline material with a nearest neighbor x-ray diffraction peak with a d-spacing in the range of about 2.02 Å to about 2.20 Å; a polycrystalline material having a (111) orientation and an a-axis of about 3.53 Å to about 3.81 Å; and a polycrystalline material having a cubic (100) or tetragonal (001) orientation and an a-axis of about 4.1 Å to about 4.7 Å. When the seed layer comprises an amorphous material or a polycrystalline material having a (111), the BiSb layer is doped, and the seed layer has a lower a/c ratio than when the seed layer comprises polycrystalline material having a cubic (100) or tetragonal (001) orientation.

    AREAL DENSITY CAPABILITY IMPROVEMENT WITH A MAIN POLE SKIN
    37.
    发明申请
    AREAL DENSITY CAPABILITY IMPROVEMENT WITH A MAIN POLE SKIN 审中-公开

    公开(公告)号：US20200327899A1

    公开(公告)日：2020-10-15

    申请号：US16912572

    申请日：2020-06-25

    Applicant: Western Digital Technologies, Inc.

    Inventor： Suping SONG ,  Zhanjie LI ,  Michael Kuok San HO ,  Quang LE ,  Alexander M. ZELTSER

    IPC: G11B5/127 ,  G11B5/31 ,  G11B5/23

    Abstract: The present disclosure generally relates to data storage devices, and more specifically, to a magnetic media drive employing a magnetic recording head. The head includes a main pole at a media facing surface (MFS), a trailing shield at the MFS, and a heavy metal layer disposed between the main pole and the trailing shield at the MFS. Spin-orbit torque (SOT) is generated from the heavy metal layer and transferred to a surface of the main pole as a current passes through the heavy metal layer in a cross-track direction. The SOT executes a torque on the surface magnetization of the main pole, which reduces the magnetic flux shunting from the main pole to the trailing shield. With the reduced magnetic flux shunting from the main pole to the trailing shield, write-ability is improved.

    MAMR WRITE HEAD WITH THERMAL DISSIPATION CONDUCTIVE GUIDE
    38.
    发明申请
    MAMR WRITE HEAD WITH THERMAL DISSIPATION CONDUCTIVE GUIDE 审中-公开

    公开(公告)号：US20190259413A1

    公开(公告)日：2019-08-22

    申请号：US16276508

    申请日：2019-02-14

    Applicant: Western Digital Technologies, Inc.

    Inventor： Quang LE ,  Hongquan JIANG ,  Ning SHI ,  Alexander M. ZELTSER

    IPC: G11B5/31 ,  G11B5/66

    Abstract: The present disclosure generally relates to data storage devices, and more specifically, to a magnetic media drive employing a magnetic recording head. The head includes a trailing shield, a main pole, a MAMR stack disposed between the trailing shield and the main pole, side shields surrounding at least a portion of the main pole, and a structure disposed between the side shields and the main pole at a media facing surface (WS). The structure is fabricated from a material that is thermally conductive and electrically insulating/dissipative. The material has a thermal conductivity of at least 50 W/(m*K) and an electrical resistivity of at least 105 Ω*m. The structure helps dissipate joule heating generated from either the main pole or the MAMR stack into surrounding area without electrical shunting, leading to reduced heating or break-down induced failures.

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