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1. 发明授权

US08570842B1 Tar with write-synchronized laser modulation 有权
标题翻译：焦点与写同步激光调制
公开(公告)号：US08570842B1
公开(公告)日：2013-10-29
申请号：US13490318
申请日：2012-06-06
申请人： Hans J. Richter , Erhard Schreck , Matteo Staffaroni , Barry C. Stipe
发明人： Hans J. Richter , Erhard Schreck , Matteo Staffaroni , Barry C. Stipe
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/0021
摘要： Instead of using discontinuous step functions or pulses to drive a laser of a TAR enabled disk drive between on and off, a fixed modulation frequency may be used that alternates between a high and low laser power such that the radiation source is always delivering heat to the magnetic media when writing data to the magnetic disk. The magnetic field of the write pole may be synchronized to the modulation frequency of the radiation source to ensure that the radiation source heats the magnetic media proximate to the write pole above the grain freezing temperature when the Zeeman energy produced by the magnetic field of the write pole exceeds the thermal energy of the magnetic media.
摘要翻译：代替使用不连续的步进功能或脉冲来驱动启用和禁用TAR的磁盘驱动器的激光器，可以使用在高和低激光功率之间交替的固定调制频率，使得辐射源总是向当磁盘写入数据时，磁性媒体。写入极的磁场可以与辐射源的调制频率同步，以确保辐射源在写入磁极附近产生的塞曼能量加热写入磁极附近的磁性介质在晶粒冻结温度以上极超过磁介质的热能。

2. 发明授权

US08498182B1 Wrap-around antenna design for improved performance in thermally-assisted magnetic recording 有权
标题翻译：环绕式天线设计，可提高热辅助磁记录的性能
公开(公告)号：US08498182B1
公开(公告)日：2013-07-30
申请号：US13490283
申请日：2012-06-06
申请人： Hamid Balamane , Jordan A. Katine , Neil L. Robertson , Matteo Staffaroni , Barry C. Stipe
发明人： Hamid Balamane , Jordan A. Katine , Neil L. Robertson , Matteo Staffaroni , Barry C. Stipe
IPC分类号： G11B11/00
CPC分类号： G11B5/3116 , G02B6/107 , G11B5/314 , G11B2005/0021
摘要： The presented embodiments generally relate to designing an antenna of an optical transducer (e.g., a near-field transducer or near-field optical source) that focuses the optical energy of a radiation source (e.g., a laser) onto a magnetic media, thereby heating the media. Specifically, the antenna is designed to wrap-around an aperture of the optical transducer such that at least a portion of the antenna is between a main pole of a write head and a surface of the aperture that faces the main pole. Moreover, the antenna may wrap-around the aperture such that it directly contacts the main pole.
摘要翻译：所提出的实施例通常涉及将辐射源（例如，激光）的光能聚焦到磁性介质上的光学换能器（例如，近场换能器或近场光源）的天线的设计，从而加热媒体。具体地说，天线被设计成环绕光学换能器的孔径，使得天线的至少一部分位于写入头的主极和面对主极的孔的表面之间。此外，天线可以环绕孔径使得其直接接触主极。

3. 发明授权

US08553506B2 Preheat feature for thermally assisted recording 有权
标题翻译：热辅助记录预热功能
公开(公告)号：US08553506B2
公开(公告)日：2013-10-08
申请号：US13340147
申请日：2011-12-29
申请人： John Contreras , Lidu Huang , Erhard Schreck , Barry C. Stipe
发明人： John Contreras , Lidu Huang , Erhard Schreck , Barry C. Stipe
IPC分类号： G11B11/00
CPC分类号： G11B5/3133 , G11B5/314 , G11B5/607 , G11B2005/0021
摘要： An apparatus according to one embodiment includes a near-field transducer positioned towards an air bearing surface side of the apparatus; and at least one conductor or circuit for causing heating of the near-field transducer. A method according to one embodiment includes heating the near-field transducer by passing a current through the at least one conductor or circuit; and illuminating the near-field transducer during a write operation, wherein the current does not pass through the at least one conductor or circuit for at least a majority of a time of illumination. Additional embodiments are also presented.
摘要翻译：根据一个实施例的装置包括朝向装置的空气轴承表面侧定位的近场换能器; 以及用于引起近场换能器加热的至少一个导体或电路。根据一个实施例的方法包括通过使电流通过至少一个导体或电路来加热近场换能器; 以及在写入操作期间照亮所述近场换能器，其中所述电流在所述照明时间的至少大部分时间内不通过所述至少一个导体或电路。还提供了另外的实施例。

4. 发明申请

US20130170331A1 PREHEAT FEATURE FOR THERMALLY ASSISTED RECORDING 有权
标题翻译：预热功能用于热辅助记录
公开(公告)号：US20130170331A1
公开(公告)日：2013-07-04
申请号：US13340147
申请日：2011-12-29
申请人： John Contreras , Lidu Huang , Erhard Schreck , Barry C. Stipe
发明人： John Contreras , Lidu Huang , Erhard Schreck , Barry C. Stipe
IPC分类号： G11B11/105 , G11B11/24 , G11B17/32
CPC分类号： G11B5/3133 , G11B5/314 , G11B5/607 , G11B2005/0021
摘要： An apparatus according to one embodiment includes a near-field transducer positioned towards an air bearing surface side of the apparatus; and at least one conductor or circuit for causing heating of the near-field transducer. A method according to one embodiment includes heating the near-field transducer by passing a current through the at least one conductor or circuit; and illuminating the near-field transducer during a write operation, wherein the current does not pass through the at least one conductor or circuit for at least a majority of a time of illumination. Additional embodiments are also presented.
摘要翻译：根据一个实施例的装置包括朝向装置的空气轴承表面侧定位的近场换能器; 以及用于引起近场换能器加热的至少一个导体或电路。根据一个实施例的方法包括通过使电流通过至少一个导体或电路来加热近场换能器; 以及在写入操作期间照亮所述近场换能器，其中所述电流在所述照明时间的至少大部分时间内不通过所述至少一个导体或电路。还提供了另外的实施例。

5. 发明授权

US08553505B2 Thermally assisted magnetic write head employing a plasmonic antenna comprising an alloyed film to improve the hardness and manufacturability of the antenna 有权
标题翻译：使用包含合金膜的等离子体激元天线的热辅助磁写头，以提高天线的硬度和可制造性
公开(公告)号：US08553505B2
公开(公告)日：2013-10-08
申请号：US12954461
申请日：2010-11-24
申请人： Vijay P. S. Rawat , Barry C. Stipe
发明人： Vijay P. S. Rawat , Barry C. Stipe
IPC分类号： G11B11/00
CPC分类号： G11B13/08 , B82Y20/00 , G02B6/1226 , G11B5/314 , G11B2005/0021
摘要： A thermally assisted write head having a plasmonic heating device. The plasmonic heating device has a plasmonic antenna located at an air bearing surface of the thermally assisted write head. The plasmonic antenna is constructed of an alloy that is sufficiently hard to withstand the processes such as ion milling and chemical mechanical polishing used to construct the plasmonic antenna. The plasmonic antenna is preferably constructed of AuX, where X is Cu, Ni, Ta, Ti, Zr or Pt having a concentration less than 5 atomic percent.
摘要翻译：一种具有等离激元加热装置的热辅助写头。等离子体激元加热装置具有位于热辅助写入头的空气轴承表面处的等离子体激元。等离子体激元天线由足够难以承受用于构造等离子体激元天线的离子铣削和化学机械抛光等工艺的合金构成。等离子体激元天线优选由AuX构成，其中X是浓度小于5原子％的Cu，Ni，Ta，Ti，Zr或Pt。

6. 发明申请

US20120300599A1 CHANNEL-SOURCE LASER-PULSING SYSTEM ARCHITECTURE FOR THERMAL-ASSISTED RECORDING 有权
标题翻译：用于热辅助记录的通道激光脉冲系统架构
公开(公告)号：US20120300599A1
公开(公告)日：2012-11-29
申请号：US13117300
申请日：2011-05-27
申请人： John Contreras , Weldon Hanson , Barry C. Stipe , Rehan Zakai
发明人： John Contreras , Weldon Hanson , Barry C. Stipe , Rehan Zakai
IPC分类号： G11B11/00
CPC分类号： G11B5/02 , G11B20/1024 , G11B20/10351 , G11B2005/0021 , G11B2220/2516
摘要： A method and apparatus for generating a laser signal for driving a laser used in thermal-assisted recording. A channel of a hard drive generates a high-frequency component of the laser signal—e.g., a periodic wave or series of pulses—and synchronizes the phase of the laser signal with a corresponding write data signal which controls the magnetization of data bits within the magnetic disk of the hard drive. The channel may be connected to a read/write integrated circuit via a channel interconnect. The read/write circuit may include a second phase control to compensate for any phase shift and an adder circuit to combine the transmitted high-frequency laser with a DC bias. Further, the read/write circuit may include a feedback loop for adjusting the DC bias based on environmental parameters of the hard drive such as temperature.
摘要翻译：一种用于产生用于驱动用于热辅助记录的激光的激光信号的方法和装置。硬盘驱动器的通道产生激光信号的高频分量（例如，周期波或一系列脉冲），并将激光信号的相位与相应的写数据信号同步，该对应写数据信号控制激光信号内的数据位的磁化硬盘的磁盘。信道可以经由信道互连连接到读/写集成电路。读/写电路可以包括用于补偿任何相移的第二相位控制和用于将发送的高频激光器与DC偏压组合的加法器电路。此外，读/写电路可以包括用于基于诸如温度的硬盘驱动器的环境参数来调整DC偏置的反馈回路。

7. 发明申请

US20120127839A1 THERMALLY ASSISTED MAGNETIC WRITE HEAD EMPLOYING A PLASMONIC ANTENNA COMPRISING AN ALLOYED FILM TO IMPROVE THE HARDNESS AND MANUFACTURABILITY OF THE ANTENNA 有权
标题翻译：使用包含合成膜的等离子体天线的热辅助磁头，以提高天线的硬度和制造能力
公开(公告)号：US20120127839A1
公开(公告)日：2012-05-24
申请号：US12954461
申请日：2010-11-24
申请人： Vijay P. S. Rawat , Barry C. Stipe
发明人： Vijay P. S. Rawat , Barry C. Stipe
IPC分类号： G11B11/00 , G11B5/02
CPC分类号： G11B13/08 , B82Y20/00 , G02B6/1226 , G11B5/314 , G11B2005/0021
摘要： A thermally assisted write head having a plasmonic heating device. The plasmonic heating device has a plasmonic antenna located at an air bearing surface of the thermally assisted write head. The plasmonic antenna is constructed of an alloy that is sufficiently hard to withstand the processes such as ion milling and chemical mechanical polishing used to construct the plasmonic antenna. The plasmonic antenna is preferably constructed of AuX, where X is Cu, Ni, Ta, Ti, Zr or Pt having a concentration less than 5 atomic percent.
摘要翻译：一种具有等离激元加热装置的热辅助写头。等离子体激元加热装置具有位于热辅助写入头的空气轴承表面处的等离子体激元。等离子体激元天线由足够难以承受用于构造等离子体激元天线的离子铣削和化学机械抛光等工艺的合金构成。等离子体激元天线优选由AuX构成，其中X是浓度小于5原子％的Cu，Ni，Ta，Ti，Zr或Pt。

8. 发明授权

US06771534B2 Thermally-assisted magnetic writing using an oxide layer and current-induced heating 有权
公开(公告)号：US06771534B2
公开(公告)日：2004-08-03
申请号：US10295678
申请日：2002-11-15
申请人： Barry C. Stipe
发明人： Barry C. Stipe
IPC分类号： G11C1100
CPC分类号： H01F10/3254 , B82Y10/00 , B82Y25/00 , G11C11/15 , G11C11/1675 , H01F41/305 , H01L27/228 , H01L43/08
摘要： A method and structure for a non-volatile magnetic random access memory (MRAM) device that has a stable magnetic electrode, an oxide layer adjacent the stable magnetic electrode, and a free magnetic electrode. The oxide layer is between the stable magnetic electrode and the free magnetic electrode. In the invention, a conductor is connected to a stable magnetic electrode. The oxide layer has a resistance at levels to allow sufficient power dissipation to lower the anisotropy of the free magnetic electrode through current induced heating. Current-induced heating is used in combination with spin-transfer torque or a magnetic field to switch the free magnetic electrode.

9. 发明申请

US20120250178A1 MAGNETIC MEDIA WITH THERMAL INSULATION LAYER FOR THERMALLY ASSISTED MAGNETIC DATA RECORDING 审中-公开
标题翻译：具有热绝缘层的磁性介质用于热辅助磁数据记录
公开(公告)号：US20120250178A1
公开(公告)日：2012-10-04
申请号：US13077797
申请日：2011-03-31
申请人： Toshiki Hirano , Fu-Ying Huang , Jia-Yang Juang , Hal J. Rosen , Barry C. Stipe
发明人： Toshiki Hirano , Fu-Ying Huang , Jia-Yang Juang , Hal J. Rosen , Barry C. Stipe
IPC分类号： G11B5/02 , G11B5/673 , G11B5/66
CPC分类号： G11B5/66 , G11B5/7325 , G11B5/82
摘要： A magnetic media for heat assisted magnetic data recording. The magnetic media includes a thermal insulation layer structure formed near the substrate of the media provide more efficient heating of the write layer by allowing less heat dissipation to the substrate. The thermal insulation layer structure can be one or more layers of an oxide such as SiO2 and one or more layers of a material such as NiTa. Increasing the number of oxide layers and NiTa layers increases the thermal insulation of the thermal insulation layer structure thereby further increasing the efficiency of the heat assisted writing.
摘要翻译：用于热辅助磁数据记录的磁介质。磁介质包括在介质的衬底附近形成的绝热层结构，通过允许对衬底的较少散热来提供写入层的更有效的加热。绝热层结构可以是一层或多层氧化物如SiO 2和一层或多层诸如NiTa的材料。增加氧化物层和NiTa层的数量增加了绝热层结构的热绝缘性，从而进一步提高了热辅助写入的效率。

10. 发明授权

US08842383B1 Laser power sensor with dual temperature sensor 有权
标题翻译：带双温度传感器的激光功率传感器
公开(公告)号：US08842383B1
公开(公告)日：2014-09-23
申请号：US13907157
申请日：2013-05-31
申请人： Hamid Balamane , John T. Contreras , Samir Garzon , Fu-Ying Huang , Lidu Huang , Barry C. Stipe
发明人： Hamid Balamane , John T. Contreras , Samir Garzon , Fu-Ying Huang , Lidu Huang , Barry C. Stipe
IPC分类号： G11B27/36
CPC分类号： G11B5/40 , G11B5/3106 , G11B5/3136 , G11B5/314 , G11B2005/0021
摘要： Embodiments of the present invention generally relate to a HAMR device having two temperature sensors disposed between a near field transducer (NFT) and a return pole. The two temperature sensors are aligned in a cross-track direction.
摘要翻译：本发明的实施例一般涉及具有设置在近场换能器（NFT）和返回极之间的两个温度传感器的HAMR装置。两个温度传感器在交叉轨道方向上对齐。

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