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公开(公告)号：US10748558B2
公开(公告)日：2020-08-18
申请号：US16020445
申请日：2018-06-27
Applicant: Seagate Technology LLC
Inventor： Mark Anthony Gubbins , Robert William Lamberton , Robert Edward Weinstein , James Joseph Touchton
Abstract: The presently disclosed technology teaches integrating disc drive electronics into a transducer head. Decreased electrical transit times and data processing times can be achieved by placing the electronics on or within the transducer head because electrical connections may be made physically shorter than in conventional systems. The electronics may include one or more of a control system circuit, a write driver, and/or a data buffer. The control system circuit generates a modified clock signal that has a fixed relation to phase and frequency of a bit-detected reference signal that corresponds to positions of patterned bits on the disc. The write driver writes outgoing data bits received from an external connection to off-head electronics directly to the writer synchronized with the modified clock signal. The data buffer stores and converts digital data bits sent from the off-head electronics to an analog signal that is synchronized with the modified clock signal.
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公开(公告)号：US10403313B1
公开(公告)日：2019-09-03
申请号：US15991010
申请日：2018-05-29
Applicant: Seagate Technology LLC
Inventor： Choon How Gan , Mark Anthony Gubbins , Roberto Fernandez Garcia , Michael James Hardy , Andres David Barbosa Neira , Yuhang Cheng , Weibin Chen
Abstract: An apparatus includes a slider configured for heat-assisted magnetic recording. The slider comprises an input coupler configured to receive light excited by a light source and a waveguide. The waveguide comprises a waveguide core tapering along a light propagation direction from a first cross-sectional width to a second cross-sectional width. The second cross sectional width is smaller than the first cross sectional width. The waveguide core comprises a trench at an output end. The waveguide comprises at least one cladding layer surrounding the waveguide core. The waveguide is configured to provide a surface plasmon-enhanced near-field radiation pattern proximate the output end in response to the received light.
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公开(公告)号：US10192577B1
公开(公告)日：2019-01-29
申请号：US15835808
申请日：2017-12-08
Applicant: Seagate Technology LLC
Inventor： Peter Kevin McGeehin , Mark Anthony Gubbins
Abstract: An apparatus comprises a slider having a media-facing surface and that is configured for heat-assisted magnetic recording. The slider comprises a write pole, a heatsink layer, and a diffusing metal. The write pole includes two or more sides extending into the slider and a pole tip at the media-facing surface. The heatsink layer is proximate at least part of the two or more sides of the write pole, and a first portion of the heatsink layer is proximate the pole tip. The diffusing metal is disposed proximate the write pole.
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公开(公告)号：US10026422B1
公开(公告)日：2018-07-17
申请号：US15609719
申请日：2017-05-31
Applicant: Seagate Technology LLC
Inventor： Swaraj Basu , Deirdre Merron , Mark Anthony Gubbins , Marcus Weigand , Prim Gangmei , Shengzhou Liao , Sharon May McClean
Abstract: A data writer may be configured with a write pole that has one or more sidewalls continuously extending from an air bearing surface. A write pole sidewall can have a plurality of different wall angles. A portion of a write pole sidewall contacting the air bearing surface can have a first wall angle with respect to a trailing edge of the write pole, parallel to the air bearing surface. A second portion of the write pole sidewall can be half or less of the first wall angle. A third portion of the write pole sidewall can be smaller than the second wall angle.
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公开(公告)号：US09934800B1
公开(公告)日：2018-04-03
申请号：US15435583
申请日：2017-02-17
Applicant: Seagate Technology LLC
Inventor： Andres David Barbosa Neira , Roberto Fernandez Garcia , Michael James Hardy , Mark Anthony Gubbins , Martin Giles Blaber
CPC classification number: G11B5/6088 , G11B5/314 , G11B7/126 , G11B11/10506 , G11B11/1051 , G11B2005/0021
Abstract: A waveguide has a first cladding layer surrounding a near-field transducer. A core of the waveguide is disposed on the first cladding layer, and a second cladding layer is disposed on the core opposite the first cladding layer. A coupler is formed of a second plasmonic material and disposed in the waveguide such that a first edge of the coupler is proximate a media-facing surface and a first side of the coupler faces and is spaced apart from a peg of the near-field transducer in a downtrack direction.
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Patent Agency Ranking
公开(公告)号：US09558770B2
公开(公告)日：2017-01-31
申请号：US15085162
申请日：2016-03-30
Applicant: Seagate Technology LLC
Inventor： Ruoxi Yang , Mark Anthony Gubbins , Aidan Goggin , Michael J. Hardy , Roberto Fernandez Garcia , Choon How Gan
CPC classification number: G11B5/4866 , G02B6/1223 , G02B6/1228 , G02B6/126 , G11B5/314 , G11B5/6088 , G11B2005/0021
Abstract: A dual-slot waveguide receives energy from a coupling waveguide. The dual-slot waveguide includes first and second light propagating regions of low-index material located side-by-side in a direction normal to a light propagation direction. Inner sides of the first and second light propagating regions are separated by a first region of a high-index material. Second and third regions of the high-index material surround outer sides of the first and second light propagating regions. A near-field transducer receives portions of the energy from the first and second light propagating regions.
Abstract translation: 双槽波导从耦合波导接收能量。 双槽波导包括在垂直于光传播方向的方向上并排设置的低折射率材料的第一和第二光传播区域。 第一和第二光传播区域的内侧被高折射率材料的第一区域隔开。 高折射率材料的第二和第三区域围绕第一和第二光传播区域的外侧。 近场换能器接收来自第一和第二光传播区域的能量的部分。
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公开(公告)号：US09123363B2
公开(公告)日：2015-09-01
申请号：US13718863
申请日：2012-12-18
Applicant: Seagate Technology LLC
Inventor： Mark Anthony Gubbins , Marcus Benedict Mooney
IPC: G11B5/31
CPC classification number: G11B5/3153 , B81C1/00357 , B81C1/00476 , B81C1/0088 , B81C3/001 , B81C99/008 , B81C2201/0194 , C09K13/08 , C23F1/02 , C23F1/28 , C23F1/30 , C30B25/04 , G03F7/0002 , G11B5/3163 , G11B5/3173 , Y10T428/11 , Y10T428/115 , Y10T428/1157 , Y10T428/1171 , Y10T428/1186 , Y10T428/1193
Abstract: Various methods for attaching a crystalline write pole onto an amorphous substrate and the resulting structures are described in detail herein. Further, the resulting structure may have a magnetic moment exceeding 2.4 Tesla. Still further, methods for depositing an epitaxial crystalline write pole on a crystalline seed or template material to ensure that the phase of the write pole is consistent with the high moment phase of the template material are also described in detail herein.
Abstract translation: 本文详细描述了用于将晶体写极连接到非晶衬底上的各种方法以及所得到的结构。 此外，所得到的结构可能具有超过2.4特斯拉的磁矩。 此外，本文还详细描述了在结晶晶种或模板材料上沉积外延晶体写极的方法，以确保写极的相位与模板材料的高时间相一致。
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公开(公告)号：US20240112696A1
公开(公告)日：2024-04-04
申请号：US18537957
申请日：2023-12-13
Applicant: Seagate Technology LLC
Inventor： Mark Anthony Gubbins , Christopher Neil Harvey , Aidan Dominic Goggin , Fadi El Hallak , Reshma Anamari Mohandas , Bryn John Howells , Scott Eugene Olson
CPC classification number: G11B5/6088 , G11B5/314 , G11B5/4866 , G11B7/126 , G11B13/08 , G11B2005/0021
Abstract: A heat-assisted magnetic recording head includes a laser, a near-field transducer, a primary waveguide, a secondary waveguide, and a photodiode. The laser is configured to emit electromagnetic radiation. The near-field transducer is configured to focus and emit an optical near-field. The primary waveguide configured to receive the electromagnetic radiation and propagate the electromagnetic radiation toward and proximal to the near-field transducer. The secondary waveguide configured to receive a portion of the electromagnetic radiation from the primary waveguide. The photodiode configured to receive the portion of the electromagnetic radiation from the secondary waveguide and emit a signal that represents a magnitude of the electromagnetic radiation that the laser emits.
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公开(公告)号：US11183207B2
公开(公告)日：2021-11-23
申请号：US16985038
申请日：2020-08-04
Applicant: Seagate Technology LLC
Inventor： Mark Anthony Gubbins , Robert William Lamberton , Robert Edward Weinstein , James Joseph Touchton
Abstract: The presently disclosed technology teaches integrating disc drive electronics into a transducer head. Decreased electrical transit times and data processing times can be achieved by placing the electronics on or within the transducer head because electrical connections may be made physically shorter than in conventional systems. The electronics may include one or more of a control system circuit, a write driver, and/or a data buffer. The control system circuit generates a modified clock signal that has a fixed relation to phase and frequency of a bit-detected reference signal that corresponds to positions of patterned bits on the disc. The write driver writes outgoing data bits received from an external connection to off-head electronics directly to the writer synchronized with the modified clock signal. The data buffer stores and converts digital data bits sent from the off-head electronics to an analog signal that is synchronized with the modified clock signal.
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公开(公告)号：US10916262B1
公开(公告)日：2021-02-09
申请号：US16725746
申请日：2019-12-23
Applicant: Seagate Technology LLC
Abstract: A device including a near field transducer, the near field transducer including a near field transducer, the near field transducer comprising a copper (Cu) alloy of the formula Cu1−zXz, where z ranges from 0.001 to 0.9 and X is selected from aluminum (Al), cobalt (Co), chromium (Cr), erbium (Er), iron (Fe), gold (Au), hafnium (Hf), iridium (Ir), molybdenum (Mo), nickel (Ni), palladium (Pd), platinum (Pt), rhenium (Re), rhodium (Rh), ruthenium (Ru), silicon (Si), tin (Sn), tantalum (Ta), tellurium (Te), titanium (Ti), tungsten (W), yttrium (Y), zinc (Zn), zirconium (Zr), or combinations thereof.
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