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公开(公告)号:US11900963B2
公开(公告)日:2024-02-13
申请号:US17807248
申请日:2022-06-16
发明人: Yuhang Cheng , Tae-Woo Lee , Michael A Seigler , Yang Wu
CPC分类号: G11B13/08 , G11B5/314 , G11B5/4866 , G11B5/6088 , G11B2005/0021
摘要: 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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公开(公告)号:US11710506B1
公开(公告)日:2023-07-25
申请号:US17656674
申请日:2022-03-28
发明人: Chubing Peng , Tae-Woo Lee , Li Wan
CPC分类号: G11B13/08 , G11B2005/0021
摘要: A heat-assisted magnetic recording head includes a near-field transducer including a plasmonic disk and a multilayer near-field emitter. The multilayer near-field emitter is configured to produce a hot spot on a proximal magnetic disk. The multilayer near-field emitter is disposed in a down-track direction relative to and coupled to the plasmonic disk.
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公开(公告)号:US20190164570A1
公开(公告)日:2019-05-30
申请号:US16260910
申请日:2019-01-29
发明人: Sarbeswar Sahoo , Martin Blaber , Hui Brickner , Tong Zhao , Yuhang Cheng , John Duda , Tae-Woo Lee
摘要: Devices having an air bearing surface (ABS), the devices including a write pole; a near field transducer (NFT) that includes a peg and a disc, wherein the peg is at the ABS of the device; a heat sink positioned adjacent the disc of the NFT; a dielectric gap positioned adjacent the peg of the NFT at the ABS of the device; and a conformal diffusion barrier layer positioned between the write pole and the dielectric gap, the disc, and the heat sink, wherein the conformal diffusion barrier layer forms at least one angle that is not greater than 135°.
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公开(公告)号:US10192574B2
公开(公告)日:2019-01-29
申请号:US15783164
申请日:2017-10-13
发明人: Sarbeswar Sahoo , Martin Blaber , Hui Brickner , Tong Zhao , Yuhang Cheng , John Duda , Tae-Woo Lee
摘要: Devices having an air bearing surface (ABS), the devices including a write pole; a near field transducer (NFT) that includes a peg and a disc, wherein the peg is at the ABS of the device; a heat sink positioned adjacent the disc of the NFT; a dielectric gap positioned adjacent the peg of the NFT at the ABS of the device; and a conformal diffusion barrier layer positioned between the write pole and the dielectric gap, the disc, and the heat sink, wherein the conformal diffusion barrier layer forms at least one angle that is not greater than 135°.
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公开(公告)号:US09449627B2
公开(公告)日:2016-09-20
申请号:US14955373
申请日:2015-12-01
发明人: Lina Cao , Chubing Peng , Werner Scholz , Pierre Asselin , Tae-Woo Lee
CPC分类号: G11B5/4866 , G02B6/122 , G11B5/314 , G11B5/6088 , G11B2005/0021
摘要: An apparatus has an input surface configured to receive energy emitted from an energy source in a first mode. A mode order converter is configured to convert the energy from the first mode to a second mode. The waveguide of the apparatus has an input end disposed proximate the input surface and configured to receive the energy in the first mode. The waveguide has an output end disposed proximate a media-facing surface and configured to deliver energy in the second mode. The output end is at an oblique angle to a cross-track line at an intersection of the media-facing surface and a substrate-parallel plane.
摘要翻译: 一种装置具有被配置为在第一模式中从能量源发射的能量的输入表面。 模式顺序转换器被配置为将来自第一模式的能量转换为第二模式。 设备的波导具有设置在输入表面附近并被配置为在第一模式中接收能量的输入端。 波导具有靠近面向介质的表面设置的输出端,并且被配置为在第二模式中传递能量。 输出端与介质相对表面和基板平行平面的交叉点处的交叉轨道线成倾斜角。
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公开(公告)号:US20160125901A1
公开(公告)日:2016-05-05
申请号:US14865303
申请日:2015-09-25
发明人: Tae-Woo Lee , Werner Scholz
IPC分类号: G11B5/48
CPC分类号: G11B13/08 , G11B5/3133 , G11B5/314 , G11B5/4866 , G11B5/6088 , G11B7/1387 , G11B2005/0021
摘要: An apparatus comprises a writer, a near-field transducer (NFT), a channel waveguide proximate the NFT, a dielectric layer between the NFT and waveguide, and a plurality of heat sinks. A first heat sink comprises a gap and contacts the NFT and the writer. A second heat sink extends across the gap of the first heat sink and between the NFT and a heat reservoir component, such as a return pole of the writer. The channel waveguide may contact the second heat sink, such as by encompassing a peripheral portion of the second heat sink. The second heat sink may have at least an outer surface comprising a plasmonic material, and may be configured to enhance plasmonic excitation of the NFT.
摘要翻译: 一种装置包括写入器,近场换能器(NFT),靠近NFT的通道波导,NFT和波导之间的介电层以及多个散热器。 第一散热器包括间隙并与NFT和作者接触。 第二散热器延伸穿过第一散热器的间隙,并且在NFT和诸如写入器的返回极的蓄热器部件之间延伸。 通道波导可以接触第二散热器,例如通过包围第二散热器的周边部分。 第二散热器可以具有包括等离子体激元材料的至少外表面,并且可以被配置为增强NFT的等离子体激发。
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公开(公告)号:US10580440B2
公开(公告)日:2020-03-03
申请号:US16260910
申请日:2019-01-29
发明人: Sarbeswar Sahoo , Martin Blaber , Hui Brickner , Tong Zhao , Yuhang Cheng , John Duda , Tae-Woo Lee
摘要: Devices having an air bearing surface (ABS), the devices including a write pole; a near field transducer (NFT) that includes a peg and a disc, wherein the peg is at the ABS of the device; a heat sink positioned adjacent the disc of the NFT; a dielectric gap positioned adjacent the peg of the NFT at the ABS of the device; and a conformal diffusion barrier layer positioned between the write pole and the dielectric gap, the disc, and the heat sink, wherein the conformal diffusion barrier layer forms at least one angle that is not greater than 135°.
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公开(公告)号:US10204644B1
公开(公告)日:2019-02-12
申请号:US15601032
申请日:2017-05-22
摘要: A recording head includes a magnetic write transducer proximate a near-field transducer. The magnetic write transduce includes a yoke extending in a direction normal to a media-facing surface and a having an edge facing and recessed from the media-facing surface. A write pole extends beyond the first end of the yoke towards the media-facing surface and overlaps a first surface of the yoke that faces the near-field transducer. The write pole has a stepped edge facing away from the media-facing surface. Two or more coil turns are stacked relative to one another in a down-track direction. The two or more coils face a second surface of the yoke that is opposed to the first surface.
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公开(公告)号:US09934795B1
公开(公告)日:2018-04-03
申请号:US15618315
申请日:2017-06-09
CPC分类号: G11B5/3146 , G11B5/1278 , G11B5/17 , G11B5/314 , G11B5/315 , G11B2005/0021
摘要: A recording head has a near-field transducer at a media-facing surface of the recording head and a write pole on a first side of the near field transducer. A first coil induces a first flux in the write pole. The recording head includes a shield on a second side of the near-field transducer that faces away from the first side. A second coil is proximate the shield and induces a second flux in the shield that controls a field angle of the first flux.
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公开(公告)号:US20160247525A1
公开(公告)日:2016-08-25
申请号:US14626206
申请日:2015-02-19
发明人: Tae-Woo Lee , Yi-Kuei Ryan Wu , Pierre Asselin , Werner Scholz
IPC分类号: G11B5/48
CPC分类号: G11B5/6088 , G02B6/1228 , G02B6/136 , G11B5/314 , G11B2005/0021
摘要: An apparatus includes a write head comprising a near-field transducer at a media-facing surface of the write head and a waveguide extending along a light-propagation direction. The waveguide is configured to receive light emitted from a light source at a fundamental transverse electric mode. The waveguide is configured to deliver the light to the near-field transducer at a transverse magnetic mode which directs surface plasmons to a recording medium in response thereto. The waveguide comprises a core with first and second tapers separated by a straight portion of constant cross sectional width. The first and second tapers successively decrease a cross-sectional width of the core as it nears the near-field transducer. The waveguide includes an end portion between the second taper and the near field transducer. The end portion comprises a top cladding layer, aside cladding layer, and a bottom cladding layer on the side cladding layer.
摘要翻译: 一种装置包括写头,该写头包括在写头的面向介质表面的近场换能器和沿着光传播方向延伸的波导。 波导被配置为在基本横向电模式下接收从光源发射的光。 波导被配置为以横向磁性模式将光传送到近场换能器,该横向磁模式将表面等离子体激元响应于该等离子体质子传导到记录介质。 波导包括具有由恒定横截面宽度的直线部分分开的第一和第二锥形的芯。 当靠近近场换能器时,第一和第二锥度依次降低了芯的横截面宽度。 波导包括在第二锥形和近场换能器之间的端部。 所述端部包括在所述侧包层上的顶部包覆层,旁边包层和下部包层。
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