公开(公告)号：US20220238135A1

公开(公告)日：2022-07-28

申请号：US17721137

申请日：2022-04-14

Applicant: Western Digital Technologies, Inc.

Inventor： Zhigang BAI ,  Youfeng ZHENG ,  Venkatesh CHEMBROLU ,  Supradeep NARAYANA ,  Yaguang WEI ,  Suping SONG ,  Terence T. LAM ,  Kuok San HO ,  Changqing SHI ,  Lijie GUAN ,  Jian-Gang ZHU

IPC: G11B5/115 ,  G11B5/31 ,  G11B5/127 ,  G11B5/187

Abstract: A magnetic head includes a main pole configured to serve as a first electrode, an upper pole containing a trailing magnetic shield configured to a serve as a second electrode, and an electrically conductive portion located in a trailing gap between the main pole and the trailing magnetic shield. The electrically conductive portion is not part of a spin torque oscillator stack, and the electrically conductive portion includes at least one electrically conductive, non-magnetic material layer. The main pole and the trailing magnetic shield are electrically shorted by the electrically conductive portion across the trailing gap between the main pole and the trailing magnetic shield such that an electrically conductive path is present between the main pole and the trailing magnetic shield through the electrically conductive portion.

公开(公告)号：US20220208220A1

公开(公告)日：2022-06-30

申请号：US17697859

申请日：2022-03-17

Applicant: Western Digital Technologies, Inc.

Inventor： Zhigang BAI ,  Youfeng ZHENG ,  Venkatesh CHEMBROLU ,  Supradeep NARAYANA ,  Yaguang WEI ,  Suping SONG ,  Terence T. LAM ,  Kuok San HO ,  Changqing SHI ,  Lijie GUAN ,  Jian-Gang ZHU

IPC: G11B5/115 ,  G11B5/31 ,  G11B5/127 ,  G11B5/187

Abstract: A magnetic head includes a main pole configured to serve as a first electrode, an upper pole containing a trailing magnetic shield configured to a serve as a second electrode, and an electrically conductive portion located in a trailing gap between the main pole and the trailing magnetic shield. The electrically conductive portion is not part of a spin torque oscillator stack, and the electrically conductive portion includes at least one electrically conductive, non-magnetic material layer. The main pole and the trailing magnetic shield are electrically shorted by the electrically conductive portion across the trailing gap between the main pole and the trailing magnetic shield such that an electrically conductive path is present between the main pole and the trailing magnetic shield through the electrically conductive portion.

公开(公告)号：US20200381011A1

公开(公告)日：2020-12-03

申请号：US16995656

申请日：2020-08-17

Applicant: Western Digital Technologies, Inc.

Inventor： Muhammad ASIF BASHIR ,  Yaguang WEI ,  Petrus Antonius VAN DER HEIJDEN ,  Xinjiang SHEN ,  Terence LAM ,  Zhigang BAI ,  Youfeng ZHENG ,  Changqing SHI ,  Michael Kuok San HO ,  Jian-Gang ZHU ,  Lijie GUAN ,  Venkatesh CHEMBROLU

IPC: G11B5/11 ,  G11B5/187

Abstract: Embodiments of the present disclosure generally relate to data storage devices, and more specifically, to storage devices employing an energy-assisted magnetic recording write head. The write head may comprise a main pole, a trailing shield, a conducting gap disposed between the main pole and the trailing shield, and one or more current blockers. The conducting gap may be conformal with the main pole. The one or more current blockers may be configured to direct the current from the main pole to the trailing shield through the conducting gap. The one or more current blockers may be further configured to recess the conducting gap away from the media facing surface. The one or more current blockers may be configured to direct the current away from a media facing surface of the write head.