公开(公告)号：US20190189153A1

公开(公告)日：2019-06-20

申请号：US15846168

申请日：2017-12-18

Applicant: Western Digital Technologies, Inc.

Inventor： Yong HU ,  Weidong HUANG

IPC: G11B5/60 ,  G11B33/14

CPC classification number: G11B5/6082 ,  G11B33/148

Abstract: Disclosed herein are sliders that include at least one leading-edge pocket, data storage devices comprising such sliders, and methods of manufacturing such sliders. The at least one leading-edge pocket increases the amount of gas flowing into the leading edge area of the ABS, which can improve the performance of the slider in low-pressure environments, such as sealed helium data storage devices. The at least one leading-edge pocket can have a variety of shapes, sizes, and features to achieve the desired slider performance (e.g., fly height, stability, etc.) in low-pressure environments.

公开(公告)号：US20180102138A1

公开(公告)日：2018-04-12

申请号：US15488272

申请日：2017-04-14

Applicant: International Business Machines Corporation

Inventor： Robert G. Biskeborn ,  Calvin S. Lo

IPC: G11B5/60 ,  G11B5/008 ,  G11B5/31

CPC classification number: G11B5/6082 ,  G11B5/00813 ,  G11B5/1871 ,  G11B5/3109 ,  G11B5/3169 ,  G11B5/3173

Abstract: An apparatus according to one embodiment includes a substrate, and a thin film layer on the substrate having transducers therein. A portion of a bearing surface slot extends along the substrate, the portion of the bearing surface slot defining a skiving edge. A length of a tape bearing surface between the substrate and the skiving edge is in a range of about 7 to about 30 microns.

公开(公告)号：US09940951B2

公开(公告)日：2018-04-10

申请号：US15053211

申请日：2016-02-25

Applicant: Western Digital (Fremont), LLC

Inventor： Jinqiu Zhang ,  Feng Liu ,  Xiaoyu Yang ,  Ming Jiang ,  Xiaotian Zhou ,  Zeyu Ma ,  Hai Sun

IPC: G11B5/235 ,  G11B5/11 ,  G11B5/127 ,  G11B5/23 ,  G11B5/187 ,  G11B5/10 ,  G11B5/60 ,  H01L21/027 ,  H01L21/3213 ,  G11B5/147 ,  G11B5/31

CPC classification number: G11B5/1278 ,  G11B5/10 ,  G11B5/11 ,  G11B5/112 ,  G11B5/147 ,  G11B5/187 ,  G11B5/1878 ,  G11B5/232 ,  G11B5/235 ,  G11B5/3116 ,  G11B5/313 ,  G11B5/3146 ,  G11B5/315 ,  G11B5/3163 ,  G11B5/6082 ,  H01L21/0272 ,  H01L21/32134 ,  H01L21/32139 ,  Y10T29/49032 ,  Y10T29/49041 ,  Y10T29/49043

Abstract: A perpendicular magnetic recording (PMR) writer is configured to magnetically record data on a rotatable disk surface. The PMR writer including a pole tip, side shields, an air-bearing surface (ABS) region, a yoke region comprising Silicon Dioxide (SiO2), side gaps and a plurality of throat regions. The side gaps are arranged respectively between the pole tip and the side shields and include SiO2. A side gap width of the plurality of throat regions increases with a side shield throat height above the ABS region for each of the throat regions. The side gap width has a different width variation in each of the throat regions.

公开(公告)号：US09928873B1

公开(公告)日：2018-03-27

申请号：US15638839

申请日：2017-06-30

Applicant: Seagate Technology LLC

Inventor： Dongming Liu ,  Huazhou Lou ,  Eric John McCalla ,  James Robert Oscarson ,  Shawn S. Silewski

IPC: G11B21/02 ,  G11B21/21 ,  G11B23/50 ,  G11B5/40 ,  G11B5/60 ,  G11B7/122 ,  G11B5/00 ,  G11B5/31

CPC classification number: G11B21/21 ,  G11B5/3106 ,  G11B5/40 ,  G11B5/6064 ,  G11B5/607 ,  G11B5/6076 ,  G11B5/6082 ,  G11B7/122 ,  G11B23/507 ,  G11B2005/0016

Abstract: An apparatus comprises a slider configured for writing data to and reading data from a magnetic recording medium and for heat-assisted magnetic recording. The slider comprises a heater configured to receive an AC signal and to cause oscillation in a spacing between the slider and the medium, and a contact sensor situated on the slider and configured to produce a DC response signal. A detector is coupled to the slider and configured to measure an amplitude of a spike in the DC response signal, calculate a ratio between the spike amplitude and an amplitude of the DC response signal, and detect contact between the slider and the medium in response to the ratio exceeding a predetermined threshold.

公开(公告)号：US20180040344A1

公开(公告)日：2018-02-08

申请号：US15227319

申请日：2016-08-03

Applicant: Seagate Technology LLC

Inventor： Erik J. Hutchinson ,  John Wolf

IPC: G11B5/60 ,  G11B5/48

CPC classification number: G11B5/6082 ,  G11B5/4866 ,  G11B5/6088 ,  G11B7/1387 ,  G11B2005/0021

Abstract: An apparatus includes an apparatus comprising a slider. The slider comprises a substrate comprising a media-facing surface, a first side surface perpendicular to the media-facing surface, and a second side surface opposite the first side surface. A heat sink layer is formed proximate to and thermally coupled to the first side surface of the substrate. A write transducer comprises a waveguide core that at least partially extends from the top surface to the media-facing surface. The waveguide core is formed proximate to and thermally coupled to the heat sink layer. A read transducer is formed proximate to the write transducer such that the read transducer is closer to a trailing edge of the slider than the write transducer.

公开(公告)号：US20180040341A1

公开(公告)日：2018-02-08

申请号：US15783178

申请日：2017-10-13

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Edwin Frank Rejda ,  Joseph Michael Stephan ,  The Ngoc Nguyen ,  Neil Zuckerman ,  Gary J. Kunkel ,  Douglas H. Cole ,  Michael A. Seigler ,  Chris Rea

IPC: G11B5/40 ,  G11B5/84 ,  G11B5/72 ,  G11B5/31 ,  G11B5/10 ,  G11B5/60 ,  G11B5/62 ,  G11B5/255 ,  G11B5/65 ,  G11B5/00

CPC classification number: G11B5/40 ,  G11B5/102 ,  G11B5/255 ,  G11B5/3103 ,  G11B5/3106 ,  G11B5/3133 ,  G11B5/6005 ,  G11B5/6082 ,  G11B5/62 ,  G11B5/65 ,  G11B5/72 ,  G11B5/8404 ,  G11B2005/0021

Abstract: A magnetic device including: a magnetic reader; a magnetic writer; and a variable overcoat, the variable overcoat positioned over at least the magnetic reader and writer, the variable overcoat having an overcoat layer, the overcoat layer having a substantially constant thickness and material; and at least one disparate overcoat portion, the disparate overcoat portion having a different thickness, a different material, or both, than the overcoat layer.

公开(公告)号：US09886976B2

公开(公告)日：2018-02-06

申请号：US15164811

申请日：2016-05-25

Applicant: HGST Netherlands B.V.

Inventor： Weidong Huang

IPC: G11B5/60 ,  G11B5/31

CPC classification number: G11B5/6082 ,  B22F3/1055 ,  B22F5/10 ,  B24B37/048 ,  B28B1/001 ,  B29C64/106 ,  B29C64/112 ,  B29C64/124 ,  B29C64/141 ,  B29C64/153 ,  B29L2031/3406 ,  B33Y10/00 ,  B33Y40/00 ,  B33Y80/00 ,  G11B5/3106 ,  G11B5/3169 ,  G11B5/6005

Abstract: Disclosed herein is a hard disk drive slider having an extended three-dimensional air-bearing surface (ABS). The slider has an ABS and a back surface opposite the ABS, where at least a portion of the back surface defines a plane (i.e., if the back surface is substantially flat, the back surface itself defines the plane). Defined herein is an ABS function, which describes the characteristics of a portion of the ABS in a two-dimensional plane made by taking a cross-section of the slider perpendicular to the plane defined by the at least a portion of the back surface. The cross-section of the slider taken perpendicular to the plane has an ABS function that is a multi-valued function, which is defined herein as a relation for which, for at least one possible input value along the selected axis in the plane, the relation evaluates to two or more distinct nonzero values.

公开(公告)号：US09886974B2

公开(公告)日：2018-02-06

申请号：US14927696

申请日：2015-10-30

Applicant: Seagate Technology LLC

Inventor： Scott Wilson Stokes ,  Victor Boris Sapozhnikov

IPC: G11B5/39 ,  G11B5/60 ,  G11B5/147 ,  G11B5/11

CPC classification number: G11B5/3912 ,  G11B5/112 ,  G11B5/1475 ,  G11B5/3932 ,  G11B5/398 ,  G11B5/6082

Abstract: A reader having a bearing surface, a free layer, and a free layer biasing structure. The free layer biasing structure includes at least one side shield that applies a first bias field level to a front portion of the free layer that is nearest to the bearing surface and applies a second bias field level to a rear portion of the free layer that is farthest from the bearing surface. The second bias field level is greater than the first bias field level.

公开(公告)号：US09881639B2

公开(公告)日：2018-01-30

申请号：US15190859

申请日：2016-06-23

Applicant: HGST Netherlands B.V.

Inventor： Damaris Davis ,  Glenn P. Gee ,  Darrick T. Smith ,  Hicham M. Sougrati

IPC: B24B41/06 ,  G11B5/31 ,  G11B5/60 ,  G11B5/127

CPC classification number: G11B5/3169 ,  G11B5/1278 ,  G11B5/3163 ,  G11B5/3173 ,  G11B5/6082

Abstract: A process for lapping a row of head sliders involves fixing the row to a lapping tool fixture, actuating each of multiple force pins to set each head slider for lapping to a respective target wedge angle, and simultaneously lapping accordingly. Each target wedge angle may be achieved by applying a respective torque to a compliant elastomer between each force pin and corresponding head slider, to transfer a pressure gradient corresponding to the torque to the corresponding head slider. Such torques may be applied through at least two wedge angle flexures interconnecting a rotatable box structure and a fixed back wall of a lapping tool, wherein the flexures virtually intersect at and define an axis of rotation about which the torques are applied. The process may further involve actuating each force pin to set each head slider for lapping to a respective reader target stripe height, and simultaneously lapping accordingly.

公开(公告)号：US09834850B1

公开(公告)日：2017-12-05

申请号：US15231272

申请日：2016-08-08

Applicant: Seagate Technology LLC

Inventor： Peter Kevin McGeehin ,  Mark Anthony Gubbins ,  Marcus Benedict Mooney

IPC: G11B5/60 ,  C25D7/12 ,  C25D5/02

CPC classification number: C25D7/123 ,  C25D3/665 ,  C25D5/022 ,  G11B5/3163 ,  G11B5/3173 ,  G11B5/6082 ,  H01L21/2885

Abstract: Disclosed herein are methods of forming one or more transducer elements in a transducer region of a slider by electrodepositing one or more metal ions from an ionic liquid solvent, and related sliders.