公开(公告)号：US20230178106A1

公开(公告)日：2023-06-08

申请号：US17554341

申请日：2021-12-17

Applicant: Seagate Technology LLC

Inventor： Florin Zavaliche ,  Kai Chieh Chang ,  Pin-Wei Huang ,  Ganping Ju ,  Jan-Ulrich Thiele

IPC: G11B5/716 ,  H01L43/02 ,  H01L43/10 ,  H01L43/12

CPC classification number: G11B5/716 ,  H01L43/02 ,  H01L43/10 ,  H01L43/12

Abstract: 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.

公开(公告)号：US20240331728A1

公开(公告)日：2024-10-03

申请号：US18437449

申请日：2024-02-09

Applicant: Seagate Technology LLC

Inventor： Wei-Heng HSU ,  Yingguo Peng ,  Pin-Wei Huang ,  Kai Chieh Chang ,  Ganping Ju

IPC: G11B5/73 ,  G11B5/00 ,  G11B5/66

CPC classification number: G11B5/7375 ,  G11B5/66 ,  G11B2005/0021

Abstract: 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.

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.

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。

公开(公告)号：US09263076B1

公开(公告)日：2016-02-16

申请号：US13789326

申请日：2013-03-07

Applicant: Seagate Technology LLC

Inventor： Yingguo Peng ,  Kai Chieh Chang ,  Yinfeng Ding ,  Ganping Ju ,  Yukiko Kubota ,  Timothy J. Klemmer ,  Jan-Ulrich Thiele ,  Qihong Wu ,  Xiaobin Zhu

IPC: G11B5/66 ,  G11B5/738 ,  F28D20/00 ,  G11B5/84 ,  G11B5/73

CPC classification number: G11B5/7325 ,  G11B5/8404

Abstract: A magnetic stack includes a heatsink layer comprising (200) Cu or (200) CuX, a magnetic recording layer, and an interlayer disposed between the heatsink layer and the magnetic recording layer.

Abstract translation: 磁性堆叠包括包含（200）Cu或（200）CuX，磁记录层和布置在散热层和磁记录层之间的中间层的散热层。

公开(公告)号：US11763845B2

公开(公告)日：2023-09-19

申请号：US17554341

申请日：2021-12-17

Applicant: Seagate Technology LLC

Inventor： Florin Zavaliche ,  Kai Chieh Chang ,  Pin-Wei Huang ,  Ganping Ju ,  Jan-Ulrich Thiele

IPC: G11B5/716 ,  G11B5/65 ,  G11B5/73

CPC classification number: G11B5/716 ,  G11B5/657 ,  G11B5/7369 ,  G11B5/7379

Abstract: 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.

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.

公开(公告)号：US09672854B2

公开(公告)日：2017-06-06

申请号：US14068871

申请日：2013-10-31

Applicant: Seagate Technology LLC

Inventor： Yukiko Kubota ,  Timothy J. Klemmer ,  Kai Chieh Chang ,  Li Gao ,  Yinfeng Ding ,  Yingguo Peng ,  Jan-Ulrich Thiele

IPC: G11B5/66 ,  G11B5/65 ,  G11B5/64 ,  G11B5/851 ,  G11B5/73

CPC classification number: G11B5/65 ,  G11B5/647 ,  G11B5/66 ,  G11B5/7325 ,  G11B5/851

Abstract: A stack includes a substrate and a magnetic recording layer. Disposed between the substrate and magnetic recording layer is an MgO—Ti(ON) layer.

公开(公告)号：US20150093598A1

公开(公告)日：2015-04-02

申请号：US14068871

申请日：2013-10-31

Applicant: Seagate Technology LLC

Inventor： Yukiko Kubota ,  Timothy J. Klemmer ,  Kai Chieh Chang ,  Li Gao ,  Yinfeng Ding ,  Yingguo Peng ,  Jan-Ulrich Thiele

IPC: G11B5/66 ,  G11B5/851 ,  G11B5/64

CPC classification number: G11B5/65 ,  G11B5/647 ,  G11B5/66 ,  G11B5/7325 ,  G11B5/851

Abstract: A stack includes a substrate and a magnetic recording layer. Disposed between the substrate and magnetic recording layer is an MgO—Ti(ON) layer.

Abstract translation: 堆叠包括基板和磁记录层。 设置在基板和磁记录层之间的是MgO-Ti（ON）层。

公开(公告)号：US10453487B2

公开(公告)日：2019-10-22

申请号：US14965579

申请日：2015-12-10

Applicant: Seagate Technology LLC

Inventor： Yukiko Kubota ,  Timothy John Klemmer ,  Kai Chieh Chang ,  Li Gao ,  Yinfeng Ding ,  Yingguo Peng ,  Jan-Ulrich Thiele

IPC: G11B5/66 ,  G11B5/65 ,  G11B5/64 ,  G11B5/851 ,  G11B5/73

Abstract: A stack includes a substrate and a magnetic recording layer. Disposed between the substrate and magnetic recording layer is an MgO—Ti(ON) layer.