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1. 发明申请

US20190172482A1 WRITE COIL COOLING ARRANGEMENT AT AIR BEARING SURFACE 审中-公开
公开(公告)号：US20190172482A1
公开(公告)日：2019-06-06
申请号：US16272378
申请日：2019-02-11
申请人： Seagate Technology LLC
发明人： Gary Joseph Kunkel , Raul Horacio Andruet , James Gary Wessel
IPC分类号： G11B5/17 , G11B5/31 , G11B5/187 , G11B5/40
CPC分类号： G11B5/17 , G11B5/012 , G11B5/187 , G11B5/3106 , G11B5/3123 , G11B5/3133 , G11B5/3136 , G11B5/40 , G11B2005/0021
摘要： A slider comprises an air bearing surface (ABS) and is configured to interact with a magnetic recording medium. A writer is provided on the slider and comprises a write coil having a media-facing surface situated at the ABS. Cooling arms project laterally from peripheral surfaces of the write coil and extend along the ABS. The media-facing surface of the write coil and the cooling arms are exposed to the ABS to facilitate increased cooling of the write coil at the ABS.

2. 发明授权

US10032468B1 Heat-assisted magnetic recording head configured to conduct heat away from slider components to a substrate 有权
公开(公告)号：US10032468B1
公开(公告)日：2018-07-24
申请号：US15344851
申请日：2016-11-07
申请人： Seagate Technology LLC
发明人： James Gary Wessel , Zoran Jandric , Vasudevan Ramaswamy
IPC分类号： G11B11/00 , G11B5/31 , G11B5/48 , G11B5/00 , G11B11/105 , G11B5/60
CPC分类号： G11B5/3133 , G11B5/3136 , G11B5/6088 , G11B11/10534 , G11B11/10536 , G11B2005/0021
摘要： An apparatus comprises a slider configured for heat assisted magnetic recording and comprising a substrate. At least one component of the slider generates heat when energized. At least one thermal via extends through a portion of the slider from a location proximate the component to the substrate. The thermal via is configured to conduct heat away from the component and to the substrate.

3. 发明授权

US09947346B2 Using window underlayer structures to protect near field transducers on heat assisted magnetic recording heads 有权
公开(公告)号：US09947346B2
公开(公告)日：2018-04-17
申请号：US15085875
申请日：2016-03-30
申请人： HGST Netherlands B.V.
发明人： Sukumar Rajauria , Robert Smith
IPC分类号： G11B5/127 , G11B5/31 , G11B5/48 , G11B5/60 , G11B5/40 , G11B5/00
CPC分类号： G11B5/314 , G11B5/3136 , G11B5/40 , G11B5/4866 , G11B5/607 , G11B5/6088 , G11B2005/0021
摘要： A system, according to one embodiment, includes: a near field transducer, a return pole, a main pole, a waveguide adjacent the near field transducer, wherein the waveguide extends away from the near field transducer along a direction perpendicular to a media facing surface, at least one cladding layer adjacent to the waveguide, an underlayer positioned behind the near field transducer with respect to the media facing surface, the underlayer extending away from the near field transducer along the direction perpendicular to the media facing surface, and a fill material at least partially surrounding the underlayer, the waveguide and the at least one cladding layer. The underlayer has a lower coefficient of thermal expansion than the fill material. Other systems, and methods are described in additional embodiments.

4. 发明授权

US09852752B1 Plasmon generator with metallic waveguide blocker for TAMR 有权
公开(公告)号：US09852752B1
公开(公告)日：2017-12-26
申请号：US15235171
申请日：2016-08-12
申请人： Headway Technologies, Inc.
发明人： Tsutomu Chou , Kouji Shimazawa , Tobias Maletzky , Weihao Xu , Shinji Hara , Yoshihiro Tsuchiya , Yiming Wang , Cherng-Chyi Han , Xuhui Jin
IPC分类号： G11B11/00 , G11B5/48 , G11B5/60 , G11B5/31 , G11B5/00 , G11B11/105
CPC分类号： G11B5/4866 , G11B5/1278 , G11B5/3106 , G11B5/3136 , G11B5/314 , G11B5/3163 , G11B5/6082 , G11B5/6088 , G11B11/10506 , G11B11/1051 , G11B2005/0021
摘要： A TAMR (thermal assisted magnetic recording) write head has a metal blocker formed against a distal end of a waveguide. The waveguide focuses optical radiation on an adjacent plasmon generator where it excites plasmon modes that heat the recording medium. Although the plasmon generator typically heats the recording medium using the plasmon near field to supply the required Joule heating, an unblocked waveguide would also send optical radiation to the medium and surrounding structures producing unwanted heating and device unreliability. The role of the blocker is to block the unwanted optical radiation and, thereby, to limit the heating to that supplied by the plasmon near field.

5. 发明授权

US09792932B2 Thin film magnetic head, head gimbals assembly, head arm assembly, and magnetic disk unit 有权
公开(公告)号：US09792932B2
公开(公告)日：2017-10-17
申请号：US15062687
申请日：2016-03-07
申请人： TDK CORPORATION
发明人： Katsuki Kurihara , Mutsumi Fujita , Yosuke Antoku
IPC分类号： G11B5/31 , G11B5/48
CPC分类号： G11B5/314 , G11B5/1278 , G11B5/3136
摘要： This thin film magnetic head includes: a magnetic pole including a first end surface exposed on an air bearing surface; a coil configured to provide a magnetic flux passing through inside of the magnetic pole; and a heatsink including a second end surface that is provided at a position recessed from the air bearing surface. The second end surface is configured to suppress reflection causing light that has traveled through an entering position on the air bearing surface to return to the entering position.

6. 发明授权

US09691416B1 Microwave assisted magnetic recording head with trailing shield heat sink 有权
公开(公告)号：US09691416B1
公开(公告)日：2017-06-27
申请号：US15132155
申请日：2016-04-18
申请人： HGST Netherlands B.V.
发明人： Takahiko Izawa , Hideaki Tanaka , Yoshinori Takeuchi
IPC分类号： G11B5/127 , G11B5/39 , G06F1/20
CPC分类号： G11B5/1278 , G06F1/20 , G11B5/127 , G11B5/3136 , G11B5/3146 , G11B2005/0024
摘要： A magnetic write head having a heat sink structure located adjacent to a trailing magnetic shield. The heat sink structure prevents heat generated by the magnetic oscillator current from causing damage to and reducing reliability of the magnetic write head. The trailing magnetic shield is substantially aligned with the magnetic oscillator, allowing the heat sink structure to wrap around the sides and back of the trailing magnetic shield and to provide good heat conduction away from the write pole, magnetic oscillator and trailing magnetic shield. The heat sink structure can be constructed of a material such as Ru, TiN, Cu, Au, Ag and AlN, and is preferably constructed of Au, which has excellent thermal properties.

7. 发明授权

US09558766B1 Controlling spacing between a read transducer and a recording medium using a write coil 有权
标题翻译：使用写入线圈控制读取换能器和记录介质之间的间距
公开(公告)号：US09558766B1
公开(公告)日：2017-01-31
申请号：US14865133
申请日：2015-09-25
申请人： Seagate Technology LLC
发明人： Xiong Liu , Lihong Zhang
IPC分类号： G11B5/127 , G11B5/31 , G11B5/00
CPC分类号： G11B5/313 , G11B5/187 , G11B5/1871 , G11B5/3123 , G11B5/3136 , G11B5/607 , G11B2005/0021
摘要： While a heat-assisted, magnetic recording medium is being read from, power is applied to a write coil of a read/write head to control a spacing between a read transducer and the recording medium via thermal expansion induced by a write pole magnetically coupled to the write coil. A coefficient of thermal expansion proximate the read transducer is higher than a coefficient of thermal expansion proximate the write pole to increase a deformation at the read transducer relative to the write pole. Optionally, a media-facing surface of the read/write head may include a recess encompassing at least the write pole to prevent contact between the write pole and the recording medium while controlling the spacing.
摘要翻译：在读取热辅助磁记录介质的同时，将功率施加到读/写头的写入线圈，以通过磁偶极耦合的写磁极引起的热膨胀来控制读换能器与记录介质之间的间隔写线圈。读取换能器附近的热膨胀系数高于靠近写极的热膨胀系数，以增加读取换能器相对于写极的变形。可选地，读/写头的面向媒体的表面可以包括至少包含写入极的凹槽，以防止写入极和记录介质之间的接触，同时控制间隔。

8. 发明授权

US09202499B2 Contact detection using laser modulation 有权
标题翻译：使用激光调制的接触检测
公开(公告)号：US09202499B2
公开(公告)日：2015-12-01
申请号：US13802386
申请日：2013-03-13
申请人： Seagate Technology LLC
发明人： James Dillon Kiely , Karl Scheppers , Declan Macken , Michael Thomas Johnson
IPC分类号： G11B5/60 , G11B5/31 , G11B5/00
CPC分类号： G11B5/6076 , G11B5/3116 , G11B5/3133 , G11B5/3136 , G11B5/314 , G11B5/607 , G11B5/6088 , G11B2005/0021
摘要： An apparatus is arranged to detect contact between an air bearing surface of a transducer and a medium using a modulated thermal sensor signal. A laser source produces modulated laser light. A thermal sensor is disposed at or near the air bearing surface and is subject to cyclic heating by the modulated laser light. The thermal sensor is configured to produce the modulated sensor signal in response to the cyclic heating.
摘要翻译：一种装置被布置成使用调制的热传感器信号检测换能器的空气轴承表面和介质之间的接触。激光源产生调制激光。热传感器设置在空气轴承表面上或附近，并且通过调制的激光进行循环加热。热传感器被配置为响应于循环加热产生调制的传感器信号。

9. 发明授权

US09165576B2 Devices including a gas barrier layer 有权
公开(公告)号：US09165576B2
公开(公告)日：2015-10-20
申请号：US14711992
申请日：2015-05-14
申请人： SEAGATE TECHNOLOGY LLC
发明人： Yuhang Cheng , Scott Franzen , Ed F. Rejda , Kurt W. Wierman , Michael Allen Seigler
IPC分类号： G11B11/00 , G11B5/40 , G11B5/48 , G11B5/00
CPC分类号： G11B5/40 , G11B5/3106 , G11B5/3136 , G11B5/314 , G11B5/3163 , G11B5/486 , G11B5/4866 , G11B2005/0021
摘要： Devices that include a near field transducer (NFT); a gas barrier layer positioned on at least a portion of the NFT; and a wear resistance layer positioned on at least a portion of the gas barrier layer wherein the gas barrier layer includes tantalum oxide (TaO), titanium oxide (TiO), chromium oxide (CrO), silicon oxide (SiO), aluminum oxide (AlO), titanium oxide (TiO), zirconium oxide (ZrO), yttrium oxide (YO), magnesium oxide (MgO), beryllium oxide (BeO), niobium oxide (NbO), hafnium oxide (HfO), vanadium oxide (VO), strontium oxide (SrO), or combinations thereof; silicon nitride (SiN), aluminum nitride (Al), boron nitride (BN), titanium nitride (TiN), zirconium nitride (ZrN), niobioum nitride (NbN), hafnium nitride (HfN), chromium nitride (CrN), or combinations thereof silicon carbide (SiC), titanium carbide (TiC), zirconium carbide (ZrC), niobioum carbide (NbC), chromium carbide (CrC), vanadium carbide (VC), boron carbide (BC), or combinations thereof or combinations thereof.

10. 发明授权

US09070384B1 Perpendicular magnetic recording write head with plate having coil regions and heat-sink regions 有权
标题翻译：垂直磁记录头，带有线圈区域和散热区域
公开(公告)号：US09070384B1
公开(公告)日：2015-06-30
申请号：US14532613
申请日：2014-11-04
申请人： HGST Netherlands B.V.
发明人： Wataru Kimura , Akira Morinaga , Shigeru Tadokoro , Hideaki Tanaka
IPC分类号： G11B5/127
CPC分类号： G11B5/1278 , G11B5/17 , G11B5/3123 , G11B5/3136
摘要： A magnetic recording write head has a continuous electrically conductive plate with an aperture, a coil region around the aperture and heat-sink regions spaced from the coil region. A yoke stud is located in the aperture and connects the upper yoke layer to the main pole. The plate with the aperture replaces the multi-turn coil of the prior art and thus allows for a short yoke height. Write current is directed to the plate coil region and induces a magnetic field in the aperture, which generates magnetic flux in the yoke stud and the connected main pole. The heat-sink regions dissipate heat generated in the plate by the write current. A lower electrical lead layer is located below the plate and also has an aperture coincident with the aperture in the plate and a coil region around the aperture to assist in generating the magnetic field in the aperture.
摘要翻译：磁记录写头具有带孔的连续导电板，围绕孔的线圈区和与线圈区隔开的散热区。磁轭螺柱位于孔内，并将上磁轭层连接到主电极。具有孔径的板代替现有技术的多匝线圈，因此允许短的轭架高度。写入电流被引导到板状线圈区域并且在孔中引起磁场，这在磁轭柱和连接的主极中产生磁通量。散热区域通过写入电流消散板中产生的热量。下电引线层位于板下方，并且还具有与板中的孔重合的孔和围绕孔的线圈区域，以有助于在孔中产生磁场。

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