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    Waveguide core layer with reduced downtrack thickness proximate a near-field transducer
    91.
    发明授权
    Waveguide core layer with reduced downtrack thickness proximate a near-field transducer 有权
    波导芯层，靠近近场传感器具有减小的压缩厚度

    公开(公告)号：US09396749B2

    公开(公告)日：2016-07-19

    申请号：US14691204

    申请日：2015-04-20

    Applicant: Seagate Technology LLC

    Inventor： Pierre Asselin ,  Ruoxi Yang ,  James Gary Wessel

    IPC: G11B11/00 ,  G11B5/60 ,  G11B5/31 ,  G11B5/00 ,  G11B11/105

    CPC classification number: G11B5/6088 ,  G11B5/314 ,  G11B11/10532 ,  G11B11/10543 ,  G11B2005/0021

    Abstract: An apparatus includes a write pole proximate a media-facing surface of a recording head. A near-field transducer is adjacent to the write pole. A waveguide has a core layer extending from an energy source to the media-facing surface. The core layer includes a region of reduced downtrack thickness proximate the near-field transducer. The region of reduced downtrack thickness is defined by a notch facing away from the near-field transducer. A material of the notch has a different index of refraction than an index of refraction of the core layer.

    Abstract translation: 一种装置包括靠近记录头的面向媒体的表面的写入磁极。 近场换能器与写柱相邻。 波导具有从能量源延伸到面向介质的表面的芯层。 核心层包括靠近近场换能器的减小的压缩厚度的区域。 减少下行横截面厚度的区域由远离近场传感器的凹口限定。 凹口的材料具有与芯层的折射率不同的折射率。

    Near-field transducer with flare peg
    92.
    发明授权
    Near-field transducer with flare peg 有权
    近场换能器带有喇叭钉

    公开(公告)号：US09304253B2

    公开(公告)日：2016-04-05

    申请号：US13789272

    申请日：2013-03-07

    Applicant: Seagate Technology LLC

    Inventor： Zoran Jandric ,  Lina Cao ,  Werner Scholz ,  James Gary Wessel

    IPC: G11B13/04 ,  G02B6/122 ,  G11B5/31 ,  G11B5/60 ,  G11B5/00

    CPC classification number: G02B6/1226 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

    Abstract: Disclosed are plasmonic near-field transducers that are useful in heat-assisted magnetic recording. The disclosed plasmonic near-field transducers have an enlarged region and a flared region. In some embodiments the disclosed plasmonic near-field transducer can also include a peg region. The flared region can act as a heat sink and can lower the thermal resistance of the peg region of the near-field transducer, thus reducing its temperature. Also disclosed are methods that include delivering light to a magnetic transducer region via a waveguide, receiving the light at a plasmonic near-field transducer having an output end and disposed in proximity to the magnetic transducer region, and delivering a surface plasmon-enhanced near-field radiation pattern proximate the output end of the plasmonic transducer in response to receiving the light.

    Abstract translation: 公开了可用于热辅助磁记录的等离子体近场换能器。 所公开的等离子体近场换能器具有扩大的区域和扩口区域。 在一些实施例中，所公开的等离子体激元近场换能器还可以包括钉住区域。 扩口区域可以作为散热器，并且可以降低近场换能器的钉区域的热阻，从而降低其温度。 还公开了一种方法，其包括经由波导将光传送到磁换能器区域，在具有输出端并设置在靠近磁换能器区域的等离子体近场换能器处接收光，以及输送表面等离子体增强的近场传感器， 响应于接收光而等离子体激元传感器的输出端附近的场辐射图。

    HEAD TRANSDUCER WITH MULTIPLE RESISTANCE TEMPERATURE SENSORS FOR HEAD-MEDIUM SPACING AND CONTACT DETECTION
    96.
    发明申请
    HEAD TRANSDUCER WITH MULTIPLE RESISTANCE TEMPERATURE SENSORS FOR HEAD-MEDIUM SPACING AND CONTACT DETECTION 有权
    具有多电阻温度传感器的头传感器用于中间间隔和接触检测

    公开(公告)号：US20150255102A1

    公开(公告)日：2015-09-10

    申请号：US14720299

    申请日：2015-05-22

    Applicant: Seagate Technology LLC

    Inventor： Michael Thomas Johnson ,  Dongming Liu ,  Huazhou Lou ,  Declan Macken ,  Timothy William Stoebe ,  James Gary Wessel ,  Xuan Zheng

    IPC: G11B5/60

    CPC classification number: G11B5/607 ,  G01K13/00 ,  G11B5/024 ,  G11B5/3133 ,  G11B5/6011 ,  G11B5/6076 ,  G11B7/0948 ,  G11B7/121 ,  G11B20/10 ,  G11B27/36

    Abstract: A head transducer, configured to interact with a magnetic recording medium, includes a first sensor having a temperature coefficient of resistance (TCR) and configured to produce a first sensor signal, and a second sensor having a TCR and configured to produce a second sensor signal. One of the first and second sensors is situated at or near a close point of the head transducer in relation to the magnetic recording medium, and the other of the first and second sensors spaced away from the close point. Circuitry is configured to combine the first and second sensor signals and produce a combined sensor signal indicative of one or both of a change in head-medium spacing and head-medium contact. Each of the sensors may have a TCR with the same sign (positive or negative) or each sensor may have a TCR with a different sign.

    Abstract translation: 被配置为与磁记录介质相互作用的头传感器包括具有温度系数电阻（TCR）并被配置为产生第一传感器信号的第一传感器，以及具有TCR并被配置为产生第二传感器信号的第二传感器 。 第一传感器和第二传感器中的一个位于头部换能器相对于磁记录介质的接近点附近，并且第一传感器和第二传感器中的另一个与近端点间隔开。 电路被配置为组合第一和第二传感器信号并产生指示头 - 介质间隔和头 - 介质接触的变化中的一个或两个的组合的传感器信号。 每个传感器可以具有相同符号（正或负）的TCR，或者每个传感器可以具有不同符号的TCR。

    Near-field transducer with rounded or obtuse corners
    97.
    发明授权
    Near-field transducer with rounded or obtuse corners 有权
    具有圆角或钝角的近场传感器

    公开(公告)号：US09129626B2

    公开(公告)日：2015-09-08

    申请号：US14061934

    申请日：2013-10-24

    Applicant: Seagate Technology LLC

    Inventor： Michael Christopher Kautzky ,  James Gary Wessel ,  Mark Ostrowski ,  Tae-Woo Lee

    IPC: G11B11/00 ,  G11B5/48 ,  G11B13/08 ,  G11B5/31 ,  G11B5/60 ,  G11B5/00 ,  G11B7/12

    CPC classification number: G11B5/4866 ,  G11B5/314 ,  G11B5/6088 ,  G11B7/124 ,  G11B7/126 ,  G11B13/08 ,  G11B2005/0021

    Abstract: Embodiments are directed to an apparatus having an air-bearing surface that is configured to interact with magnetic medium. The apparatus includes a waveguide and a plasmonic near-field transducer positioned at or near the air-bearing surface. The plasmonic near-field transducer is operatively coupled to the waveguide. The plasmonic near-field transducer includes an enlarged region and a peg region. The peg region extends from the enlarged region towards the air-bearing surface. The peg region has at least a portion of a periphery of its cross-sectional shape include curvature or at least one substantially obtuse angle.

    Abstract translation: 实施例涉及具有被配置为与磁介质相互作用的空气轴承表面的装置。 该装置包括位于空气承载表面处或附近的波导和等离子体近场换能器。 等离子体近场换能器可操作地耦合到波导。 等离子体激元近场换能器包括放大区域和钉区域。 销钉区域从扩大区域向空气轴承表面延伸。 钉区域具有其横截面形状的至少一部分周边包括曲率或至少一个基本钝角。

    Head transducer with multiple resistance temperature sensors for head-medium spacing and contact detection
    99.
    发明授权
    Head transducer with multiple resistance temperature sensors for head-medium spacing and contact detection 有权
    头传感器，具有多个电阻温度传感器，用于头中间距和接触检测

    公开(公告)号：US09036290B2

    公开(公告)日：2015-05-19

    申请号：US14457678

    申请日：2014-08-12

    Applicant: Seagate Technology LLC

    Inventor： Michael Thomas Johnson ,  Dongming Liu ,  Huazhou Lou ,  Declan Macken ,  Timothy William Stoebe ,  James Gary Wessel ,  Xuan Zheng

    IPC: G11B21/02 ,  G11B20/10 ,  G11B5/60

    CPC classification number: G11B5/607 ,  G01K13/00 ,  G11B5/024 ,  G11B5/3133 ,  G11B5/6011 ,  G11B5/6076 ,  G11B7/0948 ,  G11B7/121 ,  G11B20/10 ,  G11B27/36

    Abstract: A head transducer, configured to interact with a magnetic recording medium, includes a first sensor having a temperature coefficient of resistance (TCR) and configured to produce a first sensor signal, and a second sensor having a TCR and configured to produce a second sensor signal. One of the first and second sensors is situated at or near a close point of the head transducer in relation to the magnetic recording medium, and the other of the first and second sensors spaced away from the close point. Circuitry is configured to combine the first and second sensor signals and produce a combined sensor signal indicative of one or both of a change in head-medium spacing and head-medium contact. Each of the sensors may have a TCR with the same sign (positive or negative) or each sensor may have a TCR with a different sign.

    Abstract translation: 被配置为与磁记录介质相互作用的头传感器包括具有温度系数电阻（TCR）并被配置为产生第一传感器信号的第一传感器，以及具有TCR并被配置为产生第二传感器信号的第二传感器 。 第一传感器和第二传感器中的一个位于头部换能器相对于磁记录介质的接近点附近，并且第一传感器和第二传感器中的另一个与近端点间隔开。 电路被配置为组合第一和第二传感器信号并产生指示头 - 介质间隔和头 - 介质接触的变化中的一个或两个的组合的传感器信号。 每个传感器可以具有相同符号（正或负）的TCR，或者每个传感器可以具有不同符号的TCR。

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