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    Plasmon shield to shape and reduce optical spot
    21.
    发明授权
    Plasmon shield to shape and reduce optical spot 有权
    等离子体屏蔽形状并减少光斑

    公开(公告)号：US08036069B1

    公开(公告)日：2011-10-11

    申请号：US12802096

    申请日：2010-05-28

    申请人： Xuhui Jin ,  Yuchen Zhou ,  Joe Smyth ,  Tobias Maletzky ,  Kenichi Takano ,  Erhard Schreck

    发明人： Xuhui Jin ,  Yuchen Zhou ,  Joe Smyth ,  Tobias Maletzky ,  Kenichi Takano ,  Erhard Schreck

    IPC分类号： G11B11/00

    CPC分类号： G11B5/314 ,  G02B6/107 ,  G11B2005/0021

    摘要： A TAMR head is disclosed with a triangular shaped plasmon antenna covered on two sides with a plasmon layer that generates an edge plasmon mode along a vertex of the two plasmon sides formed opposite a main pole layer. A plasmon shield (PS) is formed along the ABS and opposite the vertex to confine an electric field from the edge plasmon mode within a small radius of the edge plasmon tip thereby reducing the optical spot size on the magnetic medium and enhancing writability. An end of a waveguide used to direct input electromagnetic radiation to the plasmon antenna adjoins a PS side opposite the ABS. In one embodiment, a magnetic shield may be formed along the ABS and adjoins the PS so that a first PS section terminates at the ABS and faces the vertex while a second PS section is formed between the magnetic shield and waveguide end.

    摘要翻译： 公开了具有三面形等离子体激元的三角形等离子体激元天线，该三角形等离子体激元天线用等离子体膜覆盖，该等离子体膜沿着与主极层相对的两个等离子体激元侧的顶点产生边缘等离子体模式。 等离子体屏蔽（PS）沿着ABS形成并与顶点相对，以将边缘等离子体激元模式的电场限制在边缘等离子体激元尖端的小半径内，从而减小磁介质上的光点尺寸并提高可写性。 用于将输入电磁辐射引导到等离子体激元天线的波导的一端与ABS相对的PS侧相邻。 在一个实施例中，可以沿着ABS形成磁屏蔽并与PS邻接，使得第一PS部分在ABS处终止并面向顶点，而在磁屏蔽和波导端之间形成第二PS部分。

    TAMR structure with HDI sensor for head-disk interference and temperature rise sensing
    24.
    发明授权
    TAMR structure with HDI sensor for head-disk interference and temperature rise sensing 有权
    具有HDI传感器的TAMR结构，用于头盘干扰和温度升高感测

    公开(公告)号：US08654618B1

    公开(公告)日：2014-02-18

    申请号：US13617487

    申请日：2012-09-14

    申请人： Kowang Liu ,  Xuhui Jin ,  Xiaohua Lou

    发明人： Kowang Liu ,  Xuhui Jin ,  Xiaohua Lou

    IPC分类号： G11B11/00

    CPC分类号： G11B5/314 ,  G11B5/607 ,  G11B5/6088 ,  G11B2005/0021

    摘要： A DFH (dynamic fly height) equipped TAMR (Thermal Assisted Magnetic Recording) write head uses optical-laser excited surface plasmons to locally heat a magnetic recording medium so that writing is enabled, while a DFH heater allows the head to fly very close to the magnetic medium. The write head includes an integral HDI sensor with a narrow track width for high spatial resolution. The HDI sensor is calibrated to obtain a relationship between its resistance and heater power. When the TAMR head is operated, measurement of high frequency voltage across the HDI sensor as a function of heater power indicates impending touchdowns, while use of the calibrated resistance curve enables the sensor to monitor temperature variations within components of the TAMR write head.

    摘要翻译： 配有TAMR（热辅助磁记录）写头的DFH（动态飞行高度）写头使用光激光激发表面等离子体激元来局部加热磁记录介质，以便写入可用，而DFH加热器允许磁头非常靠近 磁性介质。 写头包括一个集成的HDI传感器，具有窄的轨道宽度，可实现高空间分辨率。 校准HDI传感器以获得其电阻和加热器功率之间的关系。 当操作TAMR头时，通过HDI传感器的高频电压测量作为加热器功率的函数表示即将到达的触地，而使用校准的电阻曲线可以使传感器监测TAMR写入头的组件内的温度变化。

    Hybrid plasmon generator structure and process
    25.
    发明授权
    Hybrid plasmon generator structure and process 有权
    混合等离子体发生器结构与工艺

    公开(公告)号：US08488419B1

    公开(公告)日：2013-07-16

    申请号：US13548301

    申请日：2012-07-13

    申请人： Xuhui Jin ,  Yoshitaka Sasaki ,  Hiroyuki Ito

    发明人： Xuhui Jin ,  Yoshitaka Sasaki ,  Hiroyuki Ito

    IPC分类号： G11B11/00

    CPC分类号： G11B5/314 ,  G11B5/3133 ,  G11B5/3163 ,  G11B5/6088 ,  G11B2005/0021

    摘要： A TAMR head is disclosed with a hybrid plasmon generator (hPG) formed between a waveguide and write pole at an ABS. The hPG has a planar bottom surface facing the waveguide and is comprised of a first non-noble metal layer with a peg portion adjoining the ABS. The peg tip has a thickness in a down track direction and a width in a cross track direction that may be reduced to about 10 nm to shrink the size of the optical spot that provides localized heating to a track and facilitates the write process. A second metal layer made of a noble metal is formed on and alongside the first metal layer and is recessed from the ABS to expose the peg, and has a top surface adjoining the write pole that may have side and top heat sinks.

    摘要翻译： 公开了一种在ABS处形成在波导和写极之间的混合等离子体激元发生器（hPG）的TAMR头。 hPG具有面向波导的平面底表面，并且包括具有邻接ABS的钉部分的第一非贵金属层。 钉尖具有向下轨道方向的厚度和横向方向上的宽度，其可以减小到约10nm，以将向局部加热提供给轨道的光点的尺寸收缩并且便于写入过程。 由贵金属制成的第二金属层形成在第一金属层上并且与第一金属层一起并且从ABS凹入以露出钉，并且具有与可能具有侧面和顶部散热器的写入极相邻的顶表面。

    Shaped plasmon generators for thermally-assisted magnetic recording
    26.
    发明授权
    Shaped plasmon generators for thermally-assisted magnetic recording 有权
    用于热辅助磁记录的异形等离子体发生器

    公开(公告)号：US08284637B2

    公开(公告)日：2012-10-09

    申请号：US12657637

    申请日：2010-01-25

    申请人： Xuhui Jin ,  Kenichi Takano ,  Yuchen Zhou ,  Erhard Schreck ,  Joe Smyth ,  Moris Dovek

    发明人： Xuhui Jin ,  Kenichi Takano ,  Yuchen Zhou ,  Erhard Schreck ,  Joe Smyth ,  Moris Dovek

    IPC分类号： G11B11/00

    CPC分类号： G11B5/314 ,  G11B5/6088 ,  G11B2005/001 ,  G11B2005/0021

    摘要： A TAMR (Thermal Assisted Magnetic Recording) write head uses the energy of optical-laser generated plasmons in a plasmon generator to locally heat a magnetic recording medium and reduce its coercivity and magnetic anisotropy. To enable the TAMR head to operate most effectively, the antenna is formed in three portions, a wide portion of uniform horizontal area, a tapered portion tapering towards the ABS of the write head and a narrow tip extending from the tapered portion to the ABS. The wide portion enhances coupling of optical radiation from a waveguide to surface plasmons generated within the generator, the tapered portion condenses and focuses the plasmons as they propagate towards the ABS and the narrow tip further focuses the surface plasmon field at the medium surface.

    摘要翻译： TAMR（热辅助磁记录）写头使用等离子体发生器中的光学激光器产生的等离子体激元的能量来局部加热磁记录介质并降低其矫顽力和磁各向异性。 为了使TAMR头能够最有效地工作，天线形成为三个部分，宽度均匀的水平区域，朝向写入头的ABS渐缩的锥形部分和从锥形部分延伸到ABS的窄尖端。 宽部分增强了来自波导的光辐射与在发生器内产生的表面等离子体激元的耦合，锥形部分在等离子体激元朝向ABS传播时冷凝并聚焦等离子体，并且窄尖端进一步将中等表面的表面等离子体场聚焦。

    Multi-directional pin anneal of MR sensors with plasmon heating
    28.
    发明申请
    Multi-directional pin anneal of MR sensors with plasmon heating 有权
    MR等离子体加热的多向引脚退火

    公开(公告)号：US20110111133A1

    公开(公告)日：2011-05-12

    申请号：US12590364

    申请日：2009-11-06

    申请人： Yuchen Zhou ,  Xuhui Jin ,  Grace Gorman

    发明人： Yuchen Zhou ,  Xuhui Jin ,  Grace Gorman

    IPC分类号： B05D3/06 ,  B05D3/00

    CPC分类号： G01R33/093 ,  B82Y25/00 ,  B82Y40/00 ,  G11B5/3163 ,  G11B5/3903 ,  H01F10/3254 ,  H01F10/3268 ,  H01F41/304

    摘要： A method by which portions of a wafer level fabrication can be selectively heated by means of the formation of a plasmon generating layers of specific size, shape, orientation and material on the fabrication and then illuminating the formation with electromagnetic radiation of such wavelength and polarization as will optimally be absorbed by the plasmon generating layers so as to generate plasmons therein. The generated plasmons thereupon produce thermal energy which is transferred to portions of the fabrication with which the plasmon generation layer has thermal contact. This method is particularly advantageous for producing multiple anneals and different magnetic pinning directions for the anti-ferromagnetic pinning layer in each of an array of GMR or TMR devices. In that process, the anti-ferromagnetic layer must be raised above its Curie temperature at which point it loses its anti-ferromagnetic properties and can have a magnetization imposed by application of an external magnetic field. The method can equally well be applied to any wafer level fabrication or deposited film fabrication in which it is desired to heat specific regions to obtain some specified result that is temperature dependent.

    摘要翻译： 可以通过在制造上形成特定尺寸，形状，取向和材料的等离子体激元产生层来选择性地加热晶片级制造的部分的方法，然后用如下波长和极化的电磁辐射照射地层： 将最佳地被等离子体发生层吸收，以便在其中产生等离子体激元。 所产生的等离子体激元产生热能，其转移到等离子体发生层具有热接触的制造部分。 该方法对于在GMR或TMR器件阵列中的每个中的反铁磁钉扎层产生多个退火和不同的磁性钉扎方向特别有利。 在该过程中，反铁磁层必须升高到高于其居里温度，此时其失去其抗铁磁特性，并且可以通过施加外部磁场而施加磁化强度。 该方法同样可以应用于任何晶片级制造或沉积膜制造，其中期望加热特定区域以获得温度依赖性的一些指定结果。

    Plasmon antenna with magnetic core for thermally assisted magnetic recording
    29.
    发明申请
    Plasmon antenna with magnetic core for thermally assisted magnetic recording 有权
    带磁芯的等离子体天线，用于热辅助磁记录

    公开(公告)号：US20100315735A1

    公开(公告)日：2010-12-16

    申请号：US12456290

    申请日：2009-06-15

    申请人： Yuchen Zhou ,  Kenichi Takano ,  Xuhui Jin ,  Erhard Schreck ,  Moris Dovek ,  Joe Smyth

    发明人： Yuchen Zhou ,  Kenichi Takano ,  Xuhui Jin ,  Erhard Schreck ,  Moris Dovek ,  Joe Smyth

    IPC分类号： G11B5/02

    CPC分类号： G11B5/314 ,  G11B5/02 ,  G11B5/3116 ,  G11B5/3146 ,  G11B5/6088 ,  G11B2005/0005 ,  G11B2005/0021 ,  Y10T29/49032

    摘要： A TAMR (Thermal Assisted Magnetic Recording) write head uses the energy of optical-laser generated plasmons in a plasmon antenna to locally heat a magnetic recording medium and reduce its coercivity and magnetic anisotropy. To enable the TAMR head to operate most effectively, the maximum gradient of the magnetic recording field should be concentrated in the small region being heated. Typically this does not occur because the spot being heated by the antenna is offset from the position at which the magnetic pole concentrates its magnetic field. The present invention incorporates a magnetic core within a plasmon antenna, so the antenna effectively becomes an extension of the magnetic pole and produces a magnetic field whose maximum gradient overlaps the region being heated by edge plasmons being generated in a conducting layer surrounding the antenna's magnetic core.

    摘要翻译： TAMR（热辅助磁记录）写头使用等离子体天线中激光产生的等离子体激元的能量来局部加热磁记录介质并降低其矫顽力和磁各向异性。 为了使TAMR头能够最有效地运行，磁记录场的最大梯度应该集中在被加热的小区域中。 通常这不会发生，因为被天线加热的点偏离磁极集中其磁场的位置。 本发明在等离子体激元天线内结合有磁芯，因此天线有效地成为磁极的延伸，并产生磁场，其最大梯度与在天线的磁芯周围的导电层中产生的边缘等离子体激元加热的区域重叠 。