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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
Applicant: Seagate Technology LLC
Inventor： Kangkang Wang , Xiaobin Zhu , Ganping Ju , Kai Chieh Chang , Yingguo Peng , Timothy J. Klemmer , Jan-Ulrich Thiele , Pin-Wei Huang
IPC: G11B27/36 , G11B7/1263 , G11B5/024 , G11B5/09 , G11B7/1267 , G11B5/00
CPC classification number: G11B27/36 , G01R33/0325 , G11B5/024 , G11B5/09 , G11B5/4555 , G11B7/1263 , G11B7/1267 , G11B2005/0021
Abstract: 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：US10438614B1
公开(公告)日：2019-10-08
申请号：US15484383
申请日：2017-04-11
Applicant: Seagate Technology LLC
Inventor： Kangkang Wang , Ganping Ju , Edward Charles Gage
Abstract: An apparatus comprises a magnet housing dimensioned to receive a heat-assisted magnetic recording (HAMR) medium or a hard disk drive comprising at least one HAMR medium. A degausser is disposed in the magnet housing and is configured to generate at least one field sufficient to erase the HAMR medium, where the HAMR medium has a coercivity of between about 20 and 100 kOe at room temperature.
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公开(公告)号：US10134446B1
公开(公告)日：2018-11-20
申请号：US15918269
申请日：2018-03-12
Applicant: Seagate Technology LLC
Inventor： Kangkang Wang , Xiaobin Zhu , Ganping Ju , Kai Chieh Chang , Yingguo Peng , Timothy J. Klemmer , Jan-Ulrich Thiele , Pin-Wei Huang
IPC: G11B27/36 , G11B7/1267 , G11B5/024 , G11B5/09 , G11B7/1263 , G11B5/455 , G01R33/032 , G11B5/00
Abstract: 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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4.发明申请HEAT-ASSISTED ROTATING DISK MAGNETOMETER FOR ULTRA-HIGH ANISOTROPY MAGNETIC MEASUREMENTS 审中-公开用于超高分辨率磁性测量的热辅助旋转磁铁计公开(公告)号：US20160343396A1
公开(公告)日：2016-11-24
申请号：US15149361
申请日：2016-05-09
Applicant: Seagate Technology LLC
Inventor： Kangkang Wang , Xiaobin Zhu , Ganping Ju , Kai Chieh Chang , Yingguo Peng , Timothy J. Klemmer , Jan-Ulrich Thiele
IPC: G11B7/1267 , G11B5/024
CPC classification number: G11B7/1267 , G01R33/0325 , G11B5/024 , G11B5/4555 , G11B27/36 , G11B2005/0021
Abstract: 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 measure one or more magnetic properties of the track using the read signal. The apparatus can further comprise a Kerr sensor that generates a Kerr signal using the magnetic pattern.
Abstract translation: 一种装置包括用于旋转磁记录介质的主轴和磁场发生器，以将介质的轨道暴露于DC磁场。 磁场发生器被配置为在擦除模式期间使轨道饱和，并在写入模式期间逆转撞击轨道的直流磁场。 激光装置在擦除模式期间加热轨道，并且在写入模式期间，加热轨道，同时轨道暴露于反向的DC磁场，以便在其上写入磁性图案。 读取器读取磁性图案并产生读取信号。 处理器耦合到读取器并且被配置为使用读取信号来测量轨道的一个或多个磁性。 该装置还可以包括使用磁图案产生克尔信号的克尔传感器。
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5.发明授权Composite magnetic recording structure for heat assisted magnetic recording device 有权用于热辅助磁记录装置的复合磁记录结构公开(公告)号：US08988976B2
公开(公告)日：2015-03-24
申请号：US14055775
申请日：2013-10-16
Applicant: Seagate Technology LLC
Inventor： Xi Chen , Ganping Ju , Yingguo Peng , Timothy J. Klemmer , Yukiko Kubota , Jan-Ulrich Thiele , David S. Kuo , Kai-Chieh Chang , Kangkang Wang , Li Gao , Yinfeng Ding
CPC classification number: G11B5/66 , G11B5/746 , G11B5/8404 , G11B5/855 , G11B2005/0021
Abstract: The embodiments disclose a patterned composite magnetic layer structure configured to use magnetic materials having differing temperature and magnetization characteristics in a recording device, wherein the patterned composite magnetic layer structure includes magnetic layers, at least one first magnetic material configured to be used in a particular order to reduce a recording temperature and configured to control and regulate coupling and decoupling of the magnetic layers and at least one second magnetic material with differing temperature characteristics is configured to control recording and erasing of data.
Abstract translation: 实施例公开了一种图案化复合磁性层结构，其被配置为使用在记录装置中具有不同温度和磁化特性的磁性材料，其中所述图案化的复合磁性层结构包括磁性层，至少一个第一磁性材料被配置成以特定顺序使用 以降低记录温度并且被配置为控制和调节磁性层的耦合和去耦，并且具有不同温度特性的至少一个第二磁性材料被配置为控制数据的记录和擦除。
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Patent Agency Ranking
公开(公告)号：US09349402B2
公开(公告)日：2016-05-24
申请号：US14618992
申请日：2015-02-10
Applicant: SEAGATE TECHNOLOGY LLC
Inventor： Xi Chen , Ganping Ju , Yingguo Peng , Timothy J. Klemmer , Yukiko Kubota , Jan-Ulrich Thiele , David S. Kuo , Kai-Chieh Chang , Kangkang Wang , Li Gao , Yinfeng Ding
CPC classification number: G11B5/66 , G11B5/746 , G11B5/8404 , G11B5/855 , G11B2005/0021
Abstract: Provided herein is an apparatus comprising a substrate; a continuous layer over the substrate comprising a first heat sink layer; and a plurality of features over the continuous layer comprising a second heat sink layer, a first magnetic layer over the second heat sink layer, and a second magnetic layer, wherein the first and second magnetic layers are configured to provide a temperature-dependent, exchange spring mechanism.
Abstract translation: 本文提供了一种包括基底的装置; 在衬底上的连续层，包括第一散热层; 以及连续层上的多个特征，包括第二散热层，第二散热层上的第一磁性层和第二磁性层，其中第一和第二磁性层被配置成提供温度依赖性的交换 弹簧机构。
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公开(公告)号：US20150154995A1
公开(公告)日：2015-06-04
申请号：US14618992
申请日：2015-02-10
Applicant: SEAGATE TECHNOLOGY LLC
Inventor： Xi Chen , Ganping Ju , Yingguo Peng , Timothy J. Klemmer , Yukiko Kubota , Jan-Ulrich Thiele , David S. Kuo , Kai-Chieh Chang , Kangkang Wang , Li Gao , Yinfeng Ding
IPC: G11B5/66
CPC classification number: G11B5/66 , G11B5/746 , G11B5/8404 , G11B5/855 , G11B2005/0021
Abstract: Provided herein is an apparatus comprising a substrate; a continuous layer over the substrate comprising a first heat sink layer; and a plurality of features over the continuous layer comprising a second heat sink layer, a first magnetic layer over the second heat sink layer, and a second magnetic layer, wherein the first and second magnetic layers are configured to provide a temperature-dependent, exchange spring mechanism.
Abstract translation: 本文提供了一种包括基底的装置; 在衬底上的连续层，包括第一散热层; 以及连续层上的多个特征，包括第二散热层，第二散热层上的第一磁性层和第二磁性层，其中第一和第二磁性层被配置成提供温度依赖性的交换 弹簧机构。
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公开(公告)号：US09779771B1
公开(公告)日：2017-10-03
申请号：US15083735
申请日：2016-03-29
Applicant: Seagate Technology LLC
Inventor： Kangkang Wang , Yingguo Peng , Ganping Ju , Xiaobin Zhu , Li Gao , Yinfeng Ding , Kai Chieh Chang , Timothy J. Klemmer , Yukiko Kubota , Jan-Ulrich Thiele , Thomas P. Nolan
CPC classification number: G11B5/653 , G11B5/66 , G11B5/72 , G11B5/82 , G11B2005/0021
Abstract: A stack includes a substrate, a magnetic recording layer comprising FePtX disposed over the substrate, and a capping layer disposed on the magnetic recording layer. The capping layer comprises Co; at least one rare earth element; one or more elements selected from a group consisting of Fe and Pt; and an amorphizing agent comprising one to three elements selected from a group consisting of B, Zr, Ta, Cr, Nb, W, V, and Mo.
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9.发明授权Heat-assisted rotating disk magnetometer for ultra-high anisotropy magnetic measurements 有权用于超高各向异性磁测量的热辅助旋转磁铁磁力仪公开(公告)号：US09589588B2
公开(公告)日：2017-03-07
申请号：US15149361
申请日：2016-05-09
Applicant: Seagate Technology LLC
Inventor： Kangkang Wang , Xiaobin Zhu , Ganping Ju , Kai Chieh Chang , Yingguo Peng , Timothy J. Klemmer , Jan-Ulrich Thiele
IPC: G11B7/12 , G11B7/1267 , G11B5/024 , G11B5/00 , G11B27/36
CPC classification number: G11B7/1267 , G01R33/0325 , G11B5/024 , G11B5/4555 , G11B27/36 , G11B2005/0021
Abstract: 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 measure one or more magnetic properties of the track using the read signal. The apparatus can further comprise a Kerr sensor that generates a Kerr signal using the magnetic pattern.
Abstract translation: 一种装置包括用于旋转磁记录介质的主轴和磁场发生器，以将介质的轨道暴露于DC磁场。 磁场发生器被配置为在擦除模式期间使轨道饱和，并在写入模式期间逆转撞击轨道的直流磁场。 激光装置在擦除模式期间加热轨道，并且在写入模式期间，加热轨道，同时轨道暴露于反向的DC磁场，以便在其上写入磁性图案。 读取器读取磁性图案并产生读取信号。 处理器耦合到读取器并且被配置为使用读取信号来测量轨道的一个或多个磁性。 该装置还可以包括使用磁图案产生克尔信号的克尔传感器。
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10.发明授权Heat-assisted rotating disk magnetometer for ultra-high anisotropy magnetic measurements 有权用于超高各向异性磁测量的热辅助旋转磁铁磁力仪公开(公告)号：US09336832B1
公开(公告)日：2016-05-10
申请号：US14720250
申请日：2015-05-22
Applicant: Seagate Technology LLC
Inventor： Kangkang Wang , Xiaobin Zhu , Ganping Ju , Kai Chieh Chang , Yingguo Peng , Timothy J. Klemmer , Jan-Ulrich Thiele
CPC classification number: G11B7/1267 , G01R33/0325 , G11B5/024 , G11B5/4555 , G11B27/36 , G11B2005/0021
Abstract: 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 measure one or more magnetic properties of the track using the read signal. The apparatus can further comprise a Kerr sensor that generates a Kerr signal using the magnetic pattern.
Abstract translation: 一种装置包括用于旋转磁记录介质的主轴和磁场发生器，以将介质的轨道暴露于DC磁场。 磁场发生器被配置为在擦除模式期间使轨道饱和，并在写入模式期间逆转撞击轨道的直流磁场。 激光装置在擦除模式期间加热轨道，并且在写入模式期间，加热轨道，同时轨道暴露于反向的DC磁场，以便在其上写入磁性图案。 读取器读取磁性图案并产生读取信号。 处理器耦合到读取器并且被配置为使用读取信号来测量轨道的一个或多个磁性。 该装置还可以包括使用磁图案产生克尔信号的克尔传感器。
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