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公开(公告)号：US12198721B2
公开(公告)日：2025-01-14
申请号：US18523005
申请日：2023-11-29
Applicant: Seagate Technology LLC
Inventor： Yuhang Cheng , Tae-Woo Lee , Michael A. Seigler , Yang Wu
Abstract: A heat-assisted magnetic recording head comprises a near-field transducer (NFT). The NFT comprises a near-field emitter configured to heat a surface of a magnetic disk, and a hybrid plasmonic disk. The hybrid plasmonic disk comprises a plasmonic region and a thermal region. The plasmonic region comprises a first material or alloy that is a plasmonic material or alloy. The thermal region comprises a second material or alloy that is different than the first material or alloy.
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2.发明授权公开(公告)号：US10431244B2
公开(公告)日：2019-10-01
申请号：US15864480
申请日：2018-01-08
Applicant: SEAGATE TECHNOLOGY LLC
Inventor： Martin Blaber , Tong Zhao , Michael C. Kautzky , Justin Brons , John C. Duda , Yuhang Cheng , Michael A. Seigler
Abstract: Devices that have an air bearing surface (ABS), the device includes a near field transducer (NFT) that includes a disc configured to convert photons incident thereon into plasmons; and a peg configured to couple plasmons coupled from the disc into an adjacent magnetic storage medium, wherein the disc includes a disc material that includes gold or an alloy thereof and the peg includes a peg material, wherein the disc material is different from the peg material and wherein the peg material has a real part of the permittivity that is not greater than that of gold.
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公开(公告)号：US10310182B2
公开(公告)日：2019-06-04
申请号：US14055773
申请日：2013-10-16
Applicant: SEAGATE TECHNOLOGY LLC
Inventor： Ganping Ju , Chubing Peng , Xiaobin Zhu , Yingguo Peng , Yukiko Kubota , Timothy J Klemmer , Jan-Ulrich Thiele , Michael A. Seigler , Werner Scholz , Kim Y. Lee , David S. Kuo , Koichi Wago
IPC: G02B6/122
Abstract: The embodiments disclose a stack feature of a stack configured to confine optical fields within and to a patterned plasmonic underlayer in the stack configured to guide light from a light source to regulate optical coupling.
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公开(公告)号：US20170345448A1
公开(公告)日：2017-11-30
申请号：US15664189
申请日：2017-07-31
Applicant: SEAGATE TECHNOLOGY LLC
Inventor： Martin Blaber , Michael A. Seigler , Michael C. Kautzky , Tong Zhao , Justin Brons , John C. Duda , Yuhang Cheng
CPC classification number: G11B5/314 , G11B5/3116 , G11B5/3133 , G11B2005/0021
Abstract: Devices having air bearing surfaces (ABS), the devices include a near field transducer (NFT) that includes a disc configured to convert photons incident thereon into plasmons; and a peg configured to couple plasmons coupled from the disc into an adjacent magnetic storage medium, wherein the disc includes a disc material and the peg includes a peg material, wherein the disc material is different from the peg material and wherein the disc material has a first real part of the permittivity and a peg material has a second real part of the permittivity and the second real part of the permittivity is not greater than the first real part of the permittivity.
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公开(公告)号：US12190922B1
公开(公告)日：2025-01-07
申请号：US17543993
申请日：2021-12-07
Applicant: Seagate Technology LLC
Inventor： Michael A. Seigler , Peng Zhang , David James Ellison , James D. Kiely , Edwin F. Rejda
Abstract: A method involves forming a recording head that comprises a waveguide, a write pole, and a near-field transducer proximate the write pole. The near-field transducer has an extended portion extending towards a surface of the recording head and operable to direct plasmons to a recording medium. The surface of the recording head is lapped to form a lapped surface. A resist or hardmask is patterned on the lapped surface in a region that encompasses the extended portion. The lapped surface is etched with the resist or hardmask pattern to form a media-facing surface such that the extended portion protrudes beyond the media-facing surface by a first distance, and the resist or hardmask is removed.
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Patent Agency Ranking
公开(公告)号：US20180090159A1
公开(公告)日：2018-03-29
申请号：US15828381
申请日：2017-11-30
Applicant: SEAGATE TECHNOLOGY LLC
Inventor： Tong Zhao , Yuhang Cheng , Martin Giles Blaber , Jie Gong , Edwin F. Rejda , Michael A. Seigler , Seung-Yeul Yang , Michael Kautzky , Yongjun Zhao , Justin Brons , Andrew J. Boyne , Kurt W. Wierman , Scott Franzen
CPC classification number: G11B5/314 , G11B5/012 , G11B5/127 , G11B5/1278 , G11B5/187 , G11B5/3106 , G11B5/3133 , G11B5/3136 , G11B5/3967 , G11B5/6088 , G11B2005/0021
Abstract: Devices having an air bearing surface (ABS) and including a write pole; a near field transducer (NFT) that includes a peg and a disc, wherein the peg includes a rear peg portion and a peg tip, the rear peg portion and the peg tip are different materials and the peg tip includes: one or more metals; one or more nanoparticles comprising oxides, nitrides, carbides or combinations thereof; one or more conducting oxides, conducting nitrides, conducting bromides, conducting carbides, or combinations thereof; one or more semiconductors; or combinations thereof.
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公开(公告)号：US09922669B2
公开(公告)日：2018-03-20
申请号：US14981470
申请日：2015-12-28
Applicant: Seagate Technology LLC
Inventor： Kirill Rivkin , Ned Tabat , Mourad Benakli , Michael A. Seigler
CPC classification number: G11B5/1272 , G11B5/3116 , G11B5/312 , G11B5/3163 , G11B2005/0021 , Y10T29/49048
Abstract: Implementations disclosed and claimed herein include a method of write head core located in a slider, the write head core comprising a first end operative to serve as a write pole, a second end operative to serve as a return pole, wherein the first end comprises a substantially smaller cross-sectional area than the second end, and wherein the write head core has a substantially smooth curvature.
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公开(公告)号：US09721593B2
公开(公告)日：2017-08-01
申请号：US15166799
申请日：2016-05-27
Applicant: SEAGATE TECHNOLOGY LLC
Inventor： Martin Blaber , Michael A. Seigler , Michael C. Kautzky , Tong Zhao , Justin Brons , John C. Duda , Yuhang Cheng
CPC classification number: G11B5/314 , G11B5/3116 , G11B5/3133 , G11B2005/0021
Abstract: Devices having air bearing surfaces (ABS), the devices include a near field transducer (NFT) that includes a disc configured to convert photons incident thereon into plasmons; and a peg configured to couple plasmons coupled from the disc into an adjacent magnetic storage medium, wherein the disc includes a disc material and the peg includes a peg material, wherein the disc material is different from the peg material and wherein the disc material has a first real part of the permittivity and a peg material has a second real part of the permittivity and the second real part of the permittivity is not greater than the first real part of the permittivity.
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公开(公告)号：US11222657B1
公开(公告)日：2022-01-11
申请号：US17138508
申请日：2020-12-30
Applicant: Seagate Technology LLC
Inventor： Michael A. Seigler , Peng Zhang , David James Ellison , James D. Kiely , Edwin F. Rejda
Abstract: A recording head has a waveguide that delivers optical energy from an energy source and a write pole extending to a media-facing surface of the recording head. The recording head also has a near-field transducer coupled to receive the optical energy from the waveguide and emit surface plasmons from the media-facing surface towards a recording medium while the write pole applies a magnetic field to the recording medium. The near-field transducer has an extended portion that, as-manufactured, protrudes beyond the media-facing surface by a first distance.
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公开(公告)号：US10037771B2
公开(公告)日：2018-07-31
申请号：US15664189
申请日：2017-07-31
Applicant: SEAGATE TECHNOLOGY LLC
Inventor： Martin Blaber , Michael A. Seigler , Michael C. Kautzky , Tong Zhao , Justin Brons , John C. Duda , Yuhang Cheng
CPC classification number: G11B5/314 , G11B5/3116 , G11B5/3133 , G11B2005/0021
Abstract: Devices having air bearing surfaces (ABS), the devices include a near field transducer (NFT) that includes a disc configured to convert photons incident thereon into plasmons; and a peg configured to couple plasmons coupled from the disc into an adjacent magnetic storage medium, wherein the disc includes a disc material and the peg includes a peg material, wherein the disc material is different from the peg material and wherein the disc material has a first real part of the permittivity and a peg material has a second real part of the permittivity and the second real part of the permittivity is not greater than the first real part of the permittivity.
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