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公开(公告)号：US12094491B2
公开(公告)日：2024-09-17
申请号：US18081527
申请日：2022-12-14
发明人： Helene Parwana Habibi , Simon Bance , Martin Liam McGarry , Raul Horacio Andruet , Martin Giles Blaber , Weibin Chen , John Charles Duda , Mark Anthony Gubbins , Erik Jon Hutchinson , Vivek Krishnamurthy , Michael Allen Seigler , Chen Wang
CPC分类号： G11B11/10536 , G11B5/187 , G11B5/3106 , G11B5/3116 , G11B5/3133 , G11B5/3136 , G11B5/314 , G11B5/40 , G11B11/24 , G11B13/08 , G11B2005/0021
摘要： A recording head comprises a write pole extending to an air-bearing surface. A near-field transducer is positioned proximate a first side of the write pole in a down-track direction. A heatsink structure is proximate the near-field transducer and positioned between the near-field transducer and the write pole. The heatsink structure extends beyond the near-field transducer in a cross-track direction and extends in a direction normal to the air-bearing surface.
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公开(公告)号：US11776568B2
公开(公告)日：2023-10-03
申请号：US17652070
申请日：2022-02-22
发明人： Yu Lo , Yan Liu , Timothy A. Riener , Feng Liu , Yunfei Ding , Yaw-Shing Tang , Karl A. Flechsig
CPC分类号： G11B5/40 , G11B33/144 , G11B2005/0018
摘要： The present disclosure generally relates to improved lifetime of a data storage device utilizing an energy assist element. Rather than applying the same current to each energy assist element of a device, each energy assist element has a write current specific to the energy assist element. The unique applied current results in the corresponding energy assist elements having substantially the same temperature during operation. Obtaining substantially the same temperature during operation provides predictable and repeatable device performance and increases the lifetime of the entire data storage device as all energy assist elements should have substantially the same lifetime.
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公开(公告)号：US20230267954A1
公开(公告)日：2023-08-24
申请号：US17652070
申请日：2022-02-22
发明人： Yu LO , Yan LIU , Timothy A. RIENER , Feng LIU , Yunfei DING , Yaw-Shing TANG , Karl A. FLECHSIG
CPC分类号： G11B5/40 , G11B33/144 , G11B2005/0018
摘要： The present disclosure generally relates to improved lifetime of a data storage device utilizing an energy assist element. Rather than applying the same current to each energy assist element of a device, each energy assist element has a write current specific to the energy assist element. The unique applied current results in the corresponding energy assist elements having substantially the same temperature during operation. Obtaining substantially the same temperature during operation provides predictable and repeatable device performance and increases the lifetime of the entire data storage device as all energy assist elements should have substantially the same lifetime.
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公开(公告)号：US20190198046A1
公开(公告)日：2019-06-27
申请号：US16291465
申请日：2019-03-04
CPC分类号： G11B5/1272 , G11B5/105 , G11B5/3136 , G11B5/3163 , G11B5/40 , G11B2005/0021
摘要： A method involves depositing a near-field transducer on a substrate of a slider. The near-field transducer comprises a plate-like enlarged portion and a peg portion. A first hard stop extending from the near field transducer and an air bearing surface is formed. A heat sink is formed on the enlarged portion and the first hard stop. A dielectric material is deposited over the near-field transducer and the heat sink. A second hard stop is deposited on the dielectric material away from the air bearing surface. The second hard stop comprises a recess corresponding in size and location to the heat sink. The method involves milling at an oblique angle to the substrate between the first hard stop and second hard stop to cut through the heat sink at the angle. The recess of the second hard stop increases a milling rate over the heat sink compared to a second milling rate of the dielectric away from the heat sink.
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公开(公告)号：US20190066719A1
公开(公告)日：2019-02-28
申请号：US15692957
申请日：2017-08-31
CPC分类号： G11B5/6076 , G11B5/1278 , G11B5/255 , G11B5/3106 , G11B5/314 , G11B5/3967 , G11B5/40 , G11B5/607 , G11B5/6088 , G11B2005/0021
摘要： An apparatus comprises a slider comprising an air bearing surface (ABS) and configured for heat-assisted magnetic recording. The slider includes a writer and a reader at the ABS, a near-field transducer (NFT) proximate the writer, and an optical waveguide optically coupled to a laser source and the NFT. The slider further includes a sensor configured to contact and sense thermal asperities of a magnetic recording medium. The sensor is formed from one of Ru, Rh, Pd, Os, Ir, and Pt.
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公开(公告)号：US10053557B2
公开(公告)日：2018-08-21
申请号：US15272447
申请日：2016-09-22
发明人： Chi-En Lin , Jung-Pao Chang , Hung-Yu Chi
CPC分类号： C08K13/02 , C08L59/00 , C08L59/04 , G11B5/40 , G11B5/54 , C08K5/00 , C08K5/0075 , C08K5/0083 , C08K3/00 , C08K2003/2296 , C08L71/02
摘要： A polyoxymethylene composition includes a polyoxymethylene copolymer with 1,3-dioxolane as a comonomer, a wear resistance agent, a nucleating agent, and an antistatic agent. A ramp is made of the polyoxymethylene composition. The ramp and the polyoxymethylene have excellent low-wear-debris property. The low wear debris polyoxymethylene composition can be used to produce a ramp for many different designs of hard disks, such as PMR (perpendicular recording)+TDMR (Two-Dimensional Magnetic Recording), SMR (Shingled Magnetic Recording), HAMR+ (HAMR (Heat Assisted Magnetic Recording)+SMR+TDMR), BPMR+ (BPMR (Bit Pattern Media Recording)+SMR+TDMR), and helium-filled hard disk.
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公开(公告)号：US10014010B2
公开(公告)日：2018-07-03
申请号：US15252052
申请日：2016-08-30
CPC分类号： G11B5/39 , G11B5/00813 , G11B5/1871 , G11B5/3106 , G11B5/3912 , G11B5/3916 , G11B5/40
摘要： An apparatus according to one embodiment includes a substrate having a media bearing surface, and a first shield above the substrate. The first shield has a media facing side recessed from a plane extending along the media bearing surface of the substrate. A current-perpendicular-to-plane sensor is located above the substrate, the sensor having a media facing side recessed from the plane extending along the media bearing surface of the substrate. An electrically nonconductive first film is positioned on the media facing sides of the first shield and sensor. A second film is positioned on a media facing side of the first film, the second film comprising a refractory metal.
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公开(公告)号：US10008221B2
公开(公告)日：2018-06-26
申请号：US15075034
申请日：2016-03-18
发明人： Robert G. Biskeborn , Calvin S. Lo
CPC分类号： G11B5/255 , G11B5/00813 , G11B5/00826 , G11B5/29 , G11B5/3106 , G11B5/39 , G11B5/3945 , G11B5/3948 , G11B5/40 , G11B2005/3996
摘要： An apparatus for magnetic recording having a barrier layer. One embodiment includes a magnetic head having an array of sensors, each of the sensors having a media facing surface. A barrier layer is positioned above at least the media facing surfaces of the sensors. The barrier layer includes at least one at least partially polycrystalline layer.
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公开(公告)号：US09947345B2
公开(公告)日：2018-04-17
申请号：US14846713
申请日：2015-09-04
CPC分类号： G11B5/255 , G11B5/00821 , G11B5/3106 , G11B5/3113 , G11B5/40 , G11B5/41 , G11B23/0071
摘要： A product according to one embodiment includes a tape having an applicator portion for applying an organic coating to a magnetic head; the organic coating on the applicator portion of the tape; and a lubricant on a data portion of the tape. The lubricant has a different composition than the organic coating. A method for protecting a magnetic head according to one embodiment includes applying an organic coating to a magnetic head using the foregoing product.
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公开(公告)号：US09940965B2
公开(公告)日：2018-04-10
申请号：US15061166
申请日：2016-03-04
发明人： Karim Tatah , Mourad Benakli , James Gary Wessel
IPC分类号： G11B7/1263 , G11B5/09 , H01S5/068 , H01S5/06 , H01S5/026 , H01S5/065 , G11B5/02 , G11B5/40 , G11B5/455 , G11B5/00 , H01S5/024 , H01S5/062
CPC分类号： G11B7/1263 , G11B5/02 , G11B5/09 , G11B5/40 , G11B5/455 , G11B2005/0021 , H01S5/02453 , H01S5/0261 , H01S5/0612 , H01S5/0617 , H01S5/06216 , H01S5/0651 , H01S5/06804 , H01S5/06808
摘要： A method and apparatus provide for determining a temperature at a junction of a laser diode when the laser diode is operated in a lasing state that facilitates heat-assisted magnetic recording, comparing the junction temperature and an injection current supplied during the lasing state to stored combinations of junction temperature and injection current, and determining a likelihood of mode hopping occurring for the laser diode during the lasing state based on the comparison to stored combinations of junction temperature and injection current.
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