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公开(公告)号：US20230178106A1
公开(公告)日：2023-06-08
申请号：US17554341
申请日：2021-12-17
摘要： A magnetic stack includes a substrate and a soft magnetic underlayer deposited on a top surface of the substrate. A heat sink layer is disposed on top of the soft magnetic underlayer, and an interlayer is deposited on top of the heat sink layer. A non-magnetic seed layer is deposited on top of the interlayer. A magnetic recording structure which includes more than one magnetic recording layer is deposited on the top surface of the non-magnetic seed layer.
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公开(公告)号：US20240331728A1
公开(公告)日：2024-10-03
申请号：US18437449
申请日：2024-02-09
发明人： Wei-Heng HSU , Yingguo Peng , Pin-Wei Huang , Kai Chieh Chang , Ganping Ju
CPC分类号： G11B5/7375 , G11B5/66 , G11B2005/0021
摘要： A data media may generally be configured in accordance with various embodiments with contactingly adjacent first and second heatsink layers that are tuned with a common crystallographic orientation and with different thermal conductivities to provide a predetermined thermal gradient. The data media may further be configured with a recording layer formed with the common crystallographic orientation adjacent the first and second heatsink layers.
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公开(公告)号：US10930840B2
公开(公告)日：2021-02-23
申请号：US16255698
申请日：2019-01-23
发明人： Cheng Wang , Pin-Wei Huang , Ganping Ju , Kuo-Hsing Hwang
摘要： A memristor may include an exchange-coupled composite (ECC) portion to provide three or more nonvolatile magneto-resistive states. The ECC portion may include a continuous layer and a granular layer magnetically exchange coupled to the continuous layer. A plurality of memristors may be used in a system to, for example, define a neural network.
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公开(公告)号：US20190229260A1
公开(公告)日：2019-07-25
申请号：US16255698
申请日：2019-01-23
发明人： Cheng Wang , Pin-Wei Huang , Ganping Ju , Kuo-Hsing Hwang
摘要： A memristor may include an exchange-coupled composite (ECC) portion to provide three or more nonvolatile magneto-resistive states. The ECC portion may include a continuous layer and a granular layer magnetically exchange coupled to the continuous layer. A plurality of memristors may be used in a system to, for example, define a neural network.
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公开(公告)号：US11763845B2
公开(公告)日：2023-09-19
申请号：US17554341
申请日：2021-12-17
CPC分类号： G11B5/716 , G11B5/657 , G11B5/7369 , G11B5/7379
摘要： A magnetic stack includes a substrate and a soft magnetic underlayer deposited on a top surface of the substrate. A heat sink layer is disposed on top of the soft magnetic underlayer, and an interlayer is deposited on top of the heat sink layer. A non-magnetic seed layer is deposited on top of the interlayer. A magnetic recording structure which includes more than one magnetic recording layer is deposited on the top surface of the non-magnetic seed layer.
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公开(公告)号：US09916868B1
公开(公告)日：2018-03-13
申请号：US15229967
申请日：2016-08-05
发明人： Kangkang Wang , Xiaobin Zhu , Ganping Ju , Kai Chieh Chang , Yingguo Peng , Timothy J. Klemmer , Jan-Ulrich Thiele , Pin-Wei Huang
IPC分类号： G11B27/36 , G11B7/1263 , G11B5/024 , G11B5/09 , G11B7/1267 , G11B5/00
CPC分类号： G11B27/36 , G01R33/0325 , G11B5/024 , G11B5/09 , G11B5/4555 , G11B7/1263 , G11B7/1267 , G11B2005/0021
摘要： An apparatus comprises a spindle to rotate a magnetic recording medium and a magnetic field generator to expose a track of the medium to a DC magnetic field. The magnetic field generator is configured to saturate the track during an erase mode and reverse the DC magnetic field impinging the track during a writing mode. A laser arrangement heats the track during the erase mode and, during the writing mode, heats the track while the track is exposed to the reversed DC magnetic field so as to write a magnetic pattern thereon. A reader reads the magnetic pattern and generates a read signal. A processor is coupled to the reader and configured to determine an anisotropy parameter using the read signal. The apparatus can further comprise a Kerr sensor that generates a Kerr signal using the magnetic pattern.
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公开(公告)号：US09911446B1
公开(公告)日：2018-03-06
申请号：US15640924
申请日：2017-07-03
发明人： Joachim Ahner , David M. Tung , Ganping Ju , Philip L. Steiner , Thomas P. Nolan , Thomas Y. Chang , Pin-Wei Huang , Kaizhong Gao , Timothy Klemmer , David S. Kuo
CPC分类号： G11B5/66 , G11B5/02 , G11B2005/0021 , G11B2005/0024
摘要： A three dimensional magnetic recording media can consist of a coupling layer disposed between first and second vertically stacked recording layers. The coupling layer can provide exchange or antiferromagnetic coupling and allow the respective recording layers to be individually heat selected to different first and second coupling strengths through application of heat from a heat source.
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公开(公告)号：US11963464B2
公开(公告)日：2024-04-16
申请号：US17181365
申请日：2021-02-22
发明人： Cheng Wang , Pin-Wei Huang , Ganping Ju , Kuo-Hsing Hwang
摘要： A memristor may include an exchange-coupled composite (ECC) portion to provide three or more nonvolatile magneto-resistive states. The ECC portion may include a continuous layer and a granular layer magnetically exchange coupled to the continuous layer. A plurality of memristors may be used in a system to, for example, define a neural network.
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公开(公告)号：US11769526B1
公开(公告)日：2023-09-26
申请号：US17820188
申请日：2022-08-16
CPC分类号： G11B5/733 , G11B2005/0021
摘要： Magnetic recording media with a thermal spin injection layer that induces a spin injection in a magnetic recording layer in response to a thermal gradient in the thermal spin injection layer. The thermal spin injection layer may comprise an antiferromagnetic, a ferromagnetic, or a ferrimagnetic material that demonstrates a Spin Seebeck effect. In turn, when heating the magnetic recording media (e.g., with a near field transducer of a HAMR drive), the thermal gradient may be established in the thermal spin injection layer. A resulting spin torque field may assist in switching a magnetic domain in the magnetic recording layer by providing an assistive field to at least initiate switching of the magnetic domain. In turn, more reliable or efficient operation of a storage drive comprising the magnetic recording media may be realized.
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公开(公告)号：US20210175417A1
公开(公告)日：2021-06-10
申请号：US17181365
申请日：2021-02-22
发明人： Cheng Wang , Pin-Wei Huang , Ganping Ju , Kuo-Hsing Hwang
摘要： A memristor may include an exchange-coupled composite (ECC) portion to provide three or more nonvolatile magneto-resistive states. The ECC portion may include a continuous layer and a granular layer magnetically exchange coupled to the continuous layer. A plurality of memristors may be used in a system to, for example, define a neural network.
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