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    Magnetic Recording Head With Assisting Electric Current In Trailing Shield
    2.
    发明公开
    Magnetic Recording Head With Assisting Electric Current In Trailing Shield 审中-公开

    公开(公告)号：US20240144964A1

    公开(公告)日：2024-05-02

    申请号：US18408014

    申请日：2024-01-09

    申请人： Western Digital Technologies, Inc.

    发明人： Alexander GONCHAROV ,  Muhammad ASIF BASHIR ,  Petrus Antonius VAN DER HEIJDEN ,  Yunfei DING ,  Zhigang BAI ,  James Terrence OLSON

    IPC分类号： G11B5/31 ,  G11B5/23

    CPC分类号： G11B5/3116 ,  G11B5/23

    摘要： The present disclosure is generally related to a magnetic recording device comprising a magnetic recording head having a first current flow in a cross-track direction through a trailing shield. In one or more embodiments, a second current flows in a cross-track direction around the main pole. The magnetic recording device comprises a main pole disposed between a trailing shield, a leading shield, and side shields. A trailing gap is disposed between the side shields and the trailing shield. A high moment seed layer is disposed between the main pole and the trailing shield. A first insulation layer is disposed within the trailing shield and directs the first current through the trailing shield, guided to the proximity of the main pole. A second insulation layer, disposed below the trailing shield, directs the second current through the trailing shield, or alternatively through the side shields and around the main pole.

    Magnetic Recording Devices Having External Alternating Current Sources
    5.
    发明公开
    Magnetic Recording Devices Having External Alternating Current Sources 审中-公开

    公开(公告)号：US20240112694A1

    公开(公告)日：2024-04-04

    申请号：US18540472

    申请日：2023-12-14

    申请人： Western Digital Technologies, Inc.

    发明人： Muhammad ASIF BASHIR ,  Petrus Antonius VAN DER HEIJDEN ,  James Terrence OLSON ,  Alexander GONCHAROV ,  Zhigang BAI ,  Yunfei DING

    IPC分类号： G11B5/31

    CPC分类号： G11B5/315 ,  G11B5/3116

    摘要： Aspects of the present disclosure generally relate to a magnetic recording head assembly that includes an external alternating current (AC) source. A magnetic recording head of the magnetic recording head assembly includes a conductive structure between a main pole and a trailing shield. The conductive structure includes a conductive layer, and the conductive layer is nonmagnetic. The magnetic recording head assembly also includes an external AC source to supply AC current that flows through the conductive structure. In one aspect, the conductive structure is between a coil structure and the trailing shield, and the external AC source is coupled to the coil structure. The conductive structure and the external AC source facilitate consistently providing an enhanced AC writing field to facilitate effective and reliable writing, high ADC, high SNR, and reduced jitter.

    MAGNETIC WRITE HEAD FOR PROVIDING SPIN-TORQUE-ASSISTED WRITE FIELD ENHANCEMENT
    6.
    发明申请
    MAGNETIC WRITE HEAD FOR PROVIDING SPIN-TORQUE-ASSISTED WRITE FIELD ENHANCEMENT 审中-公开

    公开(公告)号：US20190295572A1

    公开(公告)日：2019-09-26

    申请号：US16440922

    申请日：2019-06-13

    申请人： Western Digital Technologies, Inc.

    发明人： James Terrence OLSON ,  Hiroyuki HOSHIYA ,  Alexander GONCHAROV ,  Masato SHIIMOTO ,  Mikito SUGIYAMA

    IPC分类号： G11B5/39

    摘要： Disclosed herein are magnetic write heads and hard disk drives comprising such magnetic write heads. A magnetic head comprises a magnetic pole, a first shield separated from the magnetic pole at an air-bearing surface (ABS) of the magnetic head, a magnetic layer disposed between the magnetic pole and the first shield, wherein the magnetic layer comprises at least of iron, cobalt, or nickel, a first non-magnetic layer disposed between the magnetic pole and the magnetic layer, and a second non-magnetic layer disposed between the magnetic layer and the first shield, wherein the magnetic layer is the only magnetic layer at the ABS that is between the main pole and the first shield that is not adjacent to the main pole or the first shield.