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公开(公告)号：US10777219B1
公开(公告)日：2020-09-15
申请号：US16450111
申请日：2019-06-24
发明人： 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
摘要： 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.
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公开(公告)号：US11925120B2
公开(公告)日：2024-03-05
申请号：US17387270
申请日：2021-07-28
IPC分类号： H10N10/17 , G01R33/09 , G11B5/39 , G11C11/16 , H10N10/82 , H10N50/10 , H10N50/80 , H10N50/85
CPC分类号： H10N10/17 , G01R33/093 , G11B5/3909 , G11C11/161 , H10N10/82 , H10N50/10 , H10N50/80 , H10N50/85
摘要： Embodiments of the present disclosure generally relate to spintronic devices, and more specifically to self-cooling spintronic devices. In an embodiment, a device is provided. The device includes a spintronic device having a first side and a second side opposite the first side, a first layer disposed on the first side, and a second layer disposed on the second side, the first layer having a Seebeck coefficient that is different from a Seebeck coefficient of the second layer.
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公开(公告)号：US10741202B2
公开(公告)日：2020-08-11
申请号：US16276500
申请日：2019-02-14
发明人： Michael Kuok San Ho , Yunfei Ding , Zhigang Bai , Yaguang Wei , Terence Lam , Goncalo Baiao de Albuquerque , Xinjiang Shen , Feng Q. Liu
摘要： The present disclosure generally relates 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 MAMR stack disposed between the main pole and the trailing shield at the MFS. The MAMR stack includes a seed layer and at least one magnetic layer. The seed layer is fabricated from a thermally conductive material having electrical resistivity lower than that of the main pole. The seed layer has a stripe height greater than a stripe height of the at least one magnetic layer. With the extended seed layer, the bias current from the trailing shield to the main pole spreads further away from the MFS along the extended seed layer before flowing into the main pole, reducing temperature rise at or near the MAMR stack, leading to improved write head reliability.
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公开(公告)号：US11557314B1
公开(公告)日：2023-01-17
申请号：US16453354
申请日：2019-06-26
发明人： Muhammad Asif Bashir , Zhigang Bai , Yaguang Wei , Terence Lam , Youfeng Zheng , Changqing Shi , Michael Kuok San Ho , Xinjiang Shen , Suping Song , Lijie Guan , Venkatesh Chembrolu
摘要： Embodiments of the present disclosure generally relate to magnetic recording systems, and more particularly to a magnetic recording system with a current-assisted write head. The write head comprises a main pole, a trailing shield disposed above the main pole, a trailing gap disposed between the main pole and the trailing shield, a side shield surrounding three sides of the main pole, the side shield being in contact with and disposed below the trailing shield and the trailing gap, and a side gap disposed between the side shield and each of the three sides of the main pole. The side gap comprises a non-magnetic electrically-conducting material to dissipate heat away from the main pole, lowering the resistance and temperature rise due to heating. The trailing gap may further comprise a non-magnetic electrically-conducting material. The write head may have a two terminal or three terminal connection configuration.
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公开(公告)号：US11049514B2
公开(公告)日：2021-06-29
申请号：US16932468
申请日：2020-07-17
发明人： Michael Kuok San Ho , Yunfei Ding , Zhigang Bai , Yaguang Wei , Terence Lam , Goncalo Marcos Baião De Albuquerque , Xinjiang Shen , Feng Q. Liu
摘要： The present disclosure generally relates 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 MAMR stack disposed between the main pole and the trailing shield at the MFS. The MAMR stack includes a seed layer and at least one magnetic layer. The seed layer is fabricated from a thermally conductive material having electrical resistivity lower than that of the main pole. The seed layer has a stripe height greater than a stripe height of the at least one magnetic layer. With the extended seed layer, the bias current from the trailing shield to the main pole spreads further away from the MFS along the extended seed layer before flowing into the main pole, reducing temperature rise at or near the MAMR stack, leading to improved write head reliability.
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公开(公告)号：US10861485B1
公开(公告)日：2020-12-08
申请号：US16995656
申请日：2020-08-17
发明人： 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
摘要： 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.
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