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1.发明申请公开(公告)号：US20190279662A1
公开(公告)日：2019-09-12
申请号：US15607604
申请日：2017-05-29
Applicant: Western Digital Technologies, Inc.
Inventor： Xiaoyong Liu , Quang Le , Hongquan Jiang , Guangli Liu , Jui-Lung Li
Abstract: A magnetic recording write head includes a spin torque oscillator (STO) between the write pole and trailing shield and an extended seed layer on the write pole beneath the STO. The seed layer has a cross-track width greater than the width of the STO and a depth in a direction orthogonal to the disk-facing surface of the write pole greater than the depth of the STO. A first insulating refill layer is formed on the sides of the extended seed layer and STO and a second insulating refill layer in contact with the first refill layer has a thermal conductivity greater than that of the first refill layer. When current is passing through the STO the extended seed layer spreads the current to reduce heating of the write pole and STO and the bilayer refill material facilitates the transfer of heat away from the write pole and STO.
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公开(公告)号：US20190221232A1
公开(公告)日：2019-07-18
申请号：US15870779
申请日：2018-01-12
Applicant: Western Digital Technologies, Inc.
Inventor： Quang Le , Yongchul Ahn , Xiaoyong Liu , Jui-Lung Li , Hongquan Jiang
CPC classification number: G11B5/6082 , G11B5/10 , G11B5/3906 , G11B5/3909 , G11B5/3912 , G11B5/3932
Abstract: Magnetic sensors with effectively shaped side shields and their fabrication processes are provided. One such sensor includes a substrate, a sensor stack disposed on the substrate and having a stripe height, where the sensor stack further includes a front edge disposed at an air bearing surface (ABS) of the magnetic sensor, a back edge opposite of the front edge, and two side edges, and a side shield adjacent to each of the two side edges of the sensor stack, each side shield having a side shield height defined as a distance from the ABS to a back edge of the side shields, where the side shield height is greater than the stripe height, and where substantially no residue from materials used to form the side shield are disposed at the back edge of the sensor stack.
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Patent Agency Ranking
公开(公告)号：US20190333534A1
公开(公告)日：2019-10-31
申请号：US16506835
申请日：2019-07-09
Applicant: Western Digital Technologies, Inc.
Inventor： Quang Le , Yongchul Ahn , Xiaoyong Liu , Jui-Lung Li , Hongquan Jiang
Abstract: Magnetic sensors with effectively shaped side shields and their fabrication processes are provided. One such process includes depositing sensor materials on a substrate, shaping the sensor materials to form a stripe height of the magnetic sensor, shaping the sensor materials to form a track width of the magnetic sensor, depositing side shield materials on the shaped sensor materials, shaping the side shield materials such that a resulting side shield extends further than the stripe height, depositing an insulator layer on the shaped side shield materials, and shaping the insulator layer.
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公开(公告)号：US10720570B2
公开(公告)日：2020-07-21
申请号：US15826578
申请日：2017-11-29
Applicant: Western Digital Technologies, Inc.
Inventor： Quang Le , David John Seagle , Xiaoyong Liu , Daniele Mauri , Yongchul Ahn , Hongquan Jiang , Guangli Liu , David Patrick Druist , Jui-Lung Li
IPC: H01L43/06 , G01R33/07 , G01R33/09 , H01L43/04 , H01L43/14 , G11C11/18 , H01L43/08 , H01L43/10 , G11B5/012 , H01F10/32 , H01L27/22 , G01R33/12 , G11B5/37 , G11B5/39 , G11C11/16
Abstract: Magnetic sensors using spin Hall effect and methods for fabricating same are provided. One such magnetic sensor includes a spin Hall layer including an electrically conductive, non-magnetic material, a magnetic free layer adjacent to the spin Hall layer, a pair of push terminals configured to enable an electrical current to pass through the magnetic free layer and the spin Hall layer in a direction that is perpendicular to a plane of the free and spin Hall layers, and a pair of sensing terminals configured to sense a voltage when the electrical current passes through the magnetic free layer and the spin Hall layer, where each of the push and sensing terminals is electrically isolated from the other terminals.
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公开(公告)号：US10410658B1
公开(公告)日：2019-09-10
申请号：US15607604
申请日：2017-05-29
Applicant: Western Digital Technologies, Inc.
Inventor： Xiaoyong Liu , Quang Le , Hongquan Jiang , Guangli Liu , Jui-Lung Li
Abstract: A magnetic recording write head includes a spin torque oscillator (STO) between the write pole and trailing shield and an extended seed layer on the write pole beneath the STO. The seed layer has a cross-track width greater than the width of the STO and a depth in a direction orthogonal to the disk-facing surface of the write pole greater than the depth of the STO. A first insulating refill layer is formed on the sides of the extended seed layer and STO and a second insulating refill layer in contact with the first refill layer has a thermal conductivity greater than that of the first refill layer. When current is passing through the STO the extended seed layer spreads the current to reduce heating of the write pole and STO and the bilayer refill material facilitates the transfer of heat away from the write pole and STO.
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公开(公告)号：US10381032B2
公开(公告)日：2019-08-13
申请号：US15870779
申请日：2018-01-12
Applicant: Western Digital Technologies, Inc.
Inventor： Quang Le , Yongchul Ahn , Xiaoyong Liu , Jui-Lung Li , Hongquan Jiang
Abstract: Magnetic sensors with effectively shaped side shields and their fabrication processes are provided. One such sensor includes a substrate, a sensor stack disposed on the substrate and having a stripe height, where the sensor stack further includes a front edge disposed at an air bearing surface (ABS) of the magnetic sensor, a back edge opposite of the front edge, and two side edges, and a side shield adjacent to each of the two side edges of the sensor stack, each side shield having a side shield height defined as a distance from the ABS to a back edge of the side shields, where the side shield height is greater than the stripe height, and where substantially no residue from materials used to form the side shield are disposed at the back edge of the sensor stack.
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公开(公告)号：US20180358543A1
公开(公告)日：2018-12-13
申请号：US15826578
申请日：2017-11-29
Applicant: Western Digital Technologies, Inc.
Inventor： Quang Le , David John Seagle , Xiaoyong Liu , Daniele Mauri , Yongchul Ahn , Hongquan Jiang , Guangli Liu , David Patrick Druist , Jui-Lung Li
IPC: H01L43/06 , H01L43/04 , H01L43/08 , H01L43/10 , H01L43/14 , H01L27/22 , G11C11/16 , G11C11/18 , H01F10/32 , G11B5/012
Abstract: Magnetic sensors using spin Hall effect and methods for fabricating same are provided. One such magnetic sensor includes a spin Hall layer including an electrically conductive, non-magnetic material, a magnetic free layer adjacent to the spin Hall layer, a pair of push terminals configured to enable an electrical current to pass through the magnetic free layer and the spin Hall layer in a direction that is perpendicular to a plane of the free and spin Hall layers, and a pair of sensing terminals configured to sense a voltage when the electrical current passes through the magnetic free layer and the spin Hall layer, where each of the push and sensing terminals is electrically isolated from the other terminals.
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