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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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2.发明申请公开(公告)号：US20210407546A1
公开(公告)日：2021-12-30
申请号：US17323474
申请日：2021-05-18
发明人： Ian James Gilbert , Peng Peng , Tim Rausch , Jan-Ulrich Thiele
摘要： A disk drive apparatus determines a pattern of bits of a data signal applied to a magnetic write transducer of a heat-assisted magnetic recording apparatus. The magnetic write transducer applies a magnetic field to a recording medium in response to the data signal. A laser power signal is applied to a laser that heats the recording medium while the magnetic field is applied. The laser power signal is modulated based on the pattern of bits. The modulation reduces differences between track widths of recorded marks having different elapsed time values and/or increases a signal-to-noise ratio of the recorded marks having different elapsed time values.
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公开(公告)号：US09799363B2
公开(公告)日：2017-10-24
申请号：US13802354
申请日：2013-03-13
发明人： Xi Chen , Yingguo Peng , Jan-Ulrich Thiele , Ganping Ju , Thomas Roscamp
摘要： A magnetic stack includes a substrate and a magnetic recording layer disposed over the substrate. The magnetic recording layer comprises magnetic crystalline grains and a segregant disposed between grain boundaries of the crystalline grains. One or both of the magnetic crystalline grains and the segregant are doped with a rare earth or transition metal dopant in an amount that provides the magnetic recording layer with a magnetic damping value, α, between about 0.1 to about 1.
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4.发明申请DAMPING CONTROLLED COMPOSITE MAGNETIC MEDIA FOR HEAT ASSISTED MAGNETIC RECORDING 有权用于热辅助磁记录的阻尼控制复合磁介质公开(公告)号：US20140272473A1
公开(公告)日：2014-09-18
申请号：US13802354
申请日：2013-03-13
发明人： Xi Chen , Yingguo Peng , Jan-Ulrich Thiele , Ganping Ju , Thomas Roscamp
摘要： A magnetic stack includes a substrate and a magnetic recording layer disposed over the substrate. The magnetic recording layer comprises magnetic crystalline grains and a segregant disposed between grain boundaries of the crystalline grains. One or both of the magnetic crystalline grains and the segregant are doped with a rare earth or transition metal dopant in an amount that provides the magnetic recording layer with a magnetic damping value, α, between about 0.1 to about 1.
摘要翻译： 磁性堆叠包括衬底和设置在衬底上的磁记录层。 磁记录层包括磁晶粒和设置在晶粒的晶界之间的分离器。 磁性晶粒和分离器中的一个或两个掺杂有稀土或过渡金属掺杂剂，其量使磁记录层具有约0.1至约1之间的磁阻尼值α。
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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：US10310182B2
公开(公告)日：2019-06-04
申请号：US14055773
申请日：2013-10-16
发明人： Ganping Ju , Chubing Peng , Xiaobin Zhu , Yingguo Peng , Yukiko Kubota , Timothy J Klemmer , Jan-Ulrich Thiele , Michael A. Seigler , Werner Scholz , Kim Y. Lee , David S. Kuo , Koichi Wago
IPC分类号： G02B6/122
摘要： The embodiments disclose a stack feature of a stack configured to confine optical fields within and to a patterned plasmonic underlayer in the stack configured to guide light from a light source to regulate optical coupling.
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公开(公告)号：US10249335B2
公开(公告)日：2019-04-02
申请号：US15713023
申请日：2017-09-22
发明人： Randall Victora , Zengyuan Liu , Pin-wei Huang , Ganping Ju , Jan-Ulrich Thiele
摘要： A heat-assisted magnetic recording media structure with exchange-coupled composite layer structure may be utilized in a data storage device. The heat-assisted magnetic recording disk structure can have a FePt-based layer as a storage layer and a FePt-based or a CoPt-based magnetic layer with higher Curie temperature as a write layer. The interface between the write layer and the storage layer may be separated by an exchange control layer. The composite structure can be optimized to reduce jitter for high density data storage by tuning the exchange coupling between the write layer and storage 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：US09672854B2
公开(公告)日：2017-06-06
申请号：US14068871
申请日：2013-10-31
发明人： Yukiko Kubota , Timothy J. Klemmer , Kai Chieh Chang , Li Gao , Yinfeng Ding , Yingguo Peng , Jan-Ulrich Thiele
CPC分类号： G11B5/65 , G11B5/647 , G11B5/66 , G11B5/7325 , G11B5/851
摘要： A stack includes a substrate and a magnetic recording layer. Disposed between the substrate and magnetic recording layer is an MgO—Ti(ON) layer.
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公开(公告)号：US09443544B1
公开(公告)日：2016-09-13
申请号：US13965976
申请日：2013-08-13
发明人： Yingguo Peng , Jan-Ulrich Thiele , Ganping Ju , Thomas Patrick Nolan , Yinfeng Ding , Alexander Qihong Wu
摘要： A magnetic stack includes multiple granular layers, at least one of the multiple granular layers is a magnetic layer that includes exchange coupled magnetic grains separated by a segregant having Ms greater than 100 emu/cc. Each of the multiple granular layers have anisotropic thermal conductivity.
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