公开(公告)号：US20150221326A1

公开(公告)日：2015-08-06

申请号：US14610771

申请日：2015-01-30

Applicant: Seagate Technology LLC

Inventor： Wonjoon Jung ,  Dimitar V. Dimitrov ,  Mark T. Kief

IPC: G11B5/33 ,  G11B5/31

CPC classification number: G11B5/332 ,  G01R33/098 ,  G11B5/315 ,  G11B5/39 ,  G11B5/3906 ,  G11B5/3912 ,  H01L43/08 ,  H01L43/10

Abstract: A data sensor may be configured with a magnetic stack disposed between first and second magnetic shields. The magnetic stack can have a non-magnetic spacer layer disposed between first and second magnetically free laminations respectively coupled to the first and second magnetic shields via first and second electrode laminations. The first magnetically free lamination may have a first sub-layer constructed of a transition metal material and disposed between a second sub-layer constructed of a negative magnetostriction material and a third sub-layer constructed of a positive magnetostriction material.have a magnetic stack configured without a fixed magnetization structure and with a barrier layer disposed between first and second magnetically free layers. At least one magnetically free layer can be coupled to a magnetic shield by magnetic electrode and coupling layers with the coupling layer configured with at least a non-magnetic first coupling sub-layer disposed between a magnetic second coupling sub-layer and a magnetic third coupling sub-layer.

Abstract translation: 数据传感器可以配置有设置在第一和第二磁屏蔽之间的磁性堆叠。 磁性堆叠可以具有通过第一和第二电极叠层分别耦合到第一和第二磁屏蔽的第一和第二无磁性层叠之间的非磁性间隔层。 第一无磁性层压体可以具有由过渡金属材料构成的第一子层，并且设置在由负磁致伸缩材料构成的第二子层和由正磁致伸缩材料构成的第三子层之间。 具有构造成没有固定磁化结构并且阻挡层设置在第一和第二无磁层之间的磁性堆叠。 至少一个无磁性层可以通过磁电极和耦合层耦合到磁屏蔽，耦合层配置有至少一个非磁性第一耦合子层，该非磁性第一耦合子层设置在磁性第二耦合子层和磁性第三耦合 子层。

公开(公告)号：US08970991B2

公开(公告)日：2015-03-03

申请号：US13797260

申请日：2013-03-12

Applicant: Seagate Technology LLC

Inventor： Dimitar Velikov Dimitrov ,  Dian Song ,  Wonjoon Jung ,  Mark William Covington ,  Mark Thomas Kief

IPC: G11B5/39

CPC classification number: G11B5/3912 ,  G11B5/3932

Abstract: A data storage device may be generally directed to a data transducing head capable of magnetoresistive data reading. Such a data transducing head may be configured with at least a trilayer reader that contacts and is biased by a coupling feature. The coupling feature may have a smaller extent from an air bearing surface (ABS) than the trilayer reader.

Abstract translation: 数据存储设备可以通常指向能够进行磁阻数据读取的数据传输头。 这样的数据传输头可以配置有至少三层读取器，其接触并被耦合特征偏置。 耦合特征可以比三层读取器具有比空气轴承表面（ABS）更小的程度。

公开(公告)号：US20140268428A1

公开(公告)日：2014-09-18

申请号：US13797260

申请日：2013-03-12

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Dimitar Velikov Dimitrov ,  Dian Song ,  Wonjoon Jung ,  Mark William Covington ,  Mark Thomas Kief

IPC: G11B5/39

CPC classification number: G11B5/3912 ,  G11B5/3932

Abstract: A data storage device may be generally directed to a data transducing head capable of magnetoresistive data reading. Such a data transducing head may be configured with at least a trilayer reader that contacts and is biased by a coupling feature. The coupling feature may have a smaller extent from an air bearing surface (ABS) than the trilayer reader.

Abstract translation: 数据存储设备通常可以指向能够进行磁阻数据读取的数据传输头。 这样的数据传输头可以配置有至少三层读取器，其接触并被耦合特征偏置。 耦合特征可以比三层读取器具有比空气轴承表面（ABS）更小的程度。

公开(公告)号：US20130228884A1

公开(公告)日：2013-09-05

申请号：US13857410

申请日：2013-04-05

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Yuankai Zheng ,  Zheng Gao ,  Wonjoon Jung ,  Xuebing Feng ,  Xiaohue Lou ,  Haiwen Xi

IPC: H01L43/02

CPC classification number: H01L43/02 ,  B82Y10/00 ,  B82Y25/00 ,  G11C11/161 ,  H01F10/3254 ,  H01F10/3263 ,  H01F10/3286 ,  H01F10/329 ,  H01F10/3295 ,  H01L43/08

Abstract: A magnetic tunnel junction having a ferromagnetic free layer and a ferromagnetic pinned reference layer, each having an out-of-plane magnetic anisotropy and an out-of-plane magnetization orientation, the ferromagnetic free layer switchable by spin torque. The magnetic tunnel junction includes a ferromagnetic assist layer proximate the free layer, the assist layer having a low magnetic anisotropy less than 700 Oe and positioned to apply a magnetic field on the free layer.

Abstract translation: 具有铁磁自由层和铁磁性固定参考层的磁性隧道结，每个具有面外磁各向异性和面外磁化取向，所述铁磁自由层可通过自旋扭矩切换。 磁性隧道结包括邻近自由层的铁磁性辅助层，辅助层具有小于700Oe的低磁各向异性，并定位成在自由层上施加磁场。

公开(公告)号：US11125836B2

公开(公告)日：2021-09-21

申请号：US15858401

申请日：2017-12-29

Applicant: Seagate Technology LLC

Inventor： Qing He ,  Wonjoon Jung ,  Mark William Covington ,  Mark Thomas Kief ,  Yonghua Chen

IPC: G01R33/00 ,  G01R33/09 ,  G11B5/31 ,  G11B5/23

Abstract: A magnetic sensor comprising a first shield and a second shield and a sensor stack between the first and the second shield, the sensor stack having a plurality of layers wherein at least one layer is annealed using in-situ rapid thermal annealing. In one implementation of the magnetic sensor a seed layer is annealed using in-situ rapid thermal annealing. Alternatively, one of a barrier layer, an antiferromagnetic (AFM) layer, and a cap layer is annealed using in-situ rapid thermal annealing.

公开(公告)号：US09691417B1

公开(公告)日：2017-06-27

申请号：US14925586

申请日：2015-10-28

Applicant: Seagate Technology LLC

Inventor： Wonjoon Jung ,  Victor Sapozhnikov

IPC: G11B5/39

CPC classification number: G11B5/3912 ,  G11B5/3909 ,  G11B5/3929 ,  G11B5/3932 ,  G11B5/398 ,  G11B2005/3996

Abstract: A reader includes a bearing surface, a sensor stack and a bottom shield below the sensor stack. The bottom shield has a synthetic antiferromagnetic (SAF) structure that includes a first magnetic layer that has a first width at the bearing surface and a second magnetic layer that has a second width at the bearing surface. The second width is less than the first width. The second magnetic layer has a magnetic orientation with at least a component that is substantially orthogonal to the bearing surface.

公开(公告)号：US09293159B2

公开(公告)日：2016-03-22

申请号：US14610771

申请日：2015-01-30

Applicant: Seagate Technology LLC

Inventor： Wonjoon Jung ,  Dimitar V. Dimitrov ,  Mark T. Kief

IPC: G11B5/39 ,  G11B5/33 ,  G11B5/31

CPC classification number: G11B5/332 ,  G01R33/098 ,  G11B5/315 ,  G11B5/39 ,  G11B5/3906 ,  G11B5/3912 ,  H01L43/08 ,  H01L43/10

Abstract: A data sensor may be configured with a magnetic stack disposed between first and second magnetic shields. The magnetic stack can have a non-magnetic spacer layer disposed between first and second magnetically free laminations respectively coupled to the first and second magnetic shields via first and second electrode laminations. The first magnetically free lamination may have a first sub-layer constructed of a transition metal material and disposed between a second sub-layer constructed of a negative magnetostriction material and a third sub-layer constructed of a positive magnetostriction material.

Abstract translation: 数据传感器可以配置有设置在第一和第二磁屏蔽之间的磁性堆叠。 磁性堆叠可以具有通过第一和第二电极叠层分别耦合到第一和第二磁屏蔽的第一和第二无磁性层叠之间的非磁性间隔层。 第一无磁性层压体可以具有由过渡金属材料构成的第一子层，并且设置在由负磁致伸缩材料构成的第二子层和由正磁致伸缩材料构成的第三子层之间。