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46 条记录 (耗时 0.021 秒)

    Localized pole tip heating device for magnetic head for hard disk drive
    1.
    发明申请
    Localized pole tip heating device for magnetic head for hard disk drive 有权
    用于硬盘驱动器的磁头的本地极尖加热装置

    公开(公告)号：US20050018347A1

    公开(公告)日：2005-01-27

    申请号：US10624656

    申请日：2003-07-21

    申请人： Wen-Chien Hsiao ,  Quan-Chiu Lam

    发明人： Wen-Chien Hsiao ,  Quan-Chiu Lam

    IPC分类号： G11B5/00 ,  G11B5/012 ,  G11B5/10 ,  G11B5/17 ,  G11B5/31 ,  G11B5/39

    CPC分类号： G11B5/3133 ,  G11B5/012 ,  G11B5/17 ,  G11B5/3103 ,  G11B5/3113 ,  G11B5/3116 ,  G11B5/3143 ,  G11B5/3967 ,  G11B2005/0002 ,  G11B2005/0005 ,  G11B2005/0008 ,  G11B2005/0013

    摘要： The magnetic head is formed with a narrow pole tip, and a pole tip heating element is fabricated to reduce the pole tip stress and increase its permeability, such that the magnetization switching speed of the pole tip is increased. The heating element is preferably electrically interconnected within the induction coil circuit of the magnetic head, such that the electrical current flowing through the induction coil also flows through the heating element. In a preferred embodiment, the heating element is fabricated above the second magnetic pole. The heating element is preferably formed with a resistance of approximately 0.2 to 1.0 ohms, such that the approximately 40 mA current that flows through the induction coil and the heating element creates a heating energy of the heating element of approximately 0.3 to 1.6 mW. The heating element can be comprised of a variety of materials such as Cu, W, NiFe, NiCr and IrRh.

    摘要翻译： 磁头形成有窄极尖，并且制造极尖加热元件以减小极尖应力并增加其磁导率，使得极尖的磁化转换速度增加。 加热元件优选地在磁头的感应线圈电路内电互连，使得流过感应线圈的电流也流过加热元件。 在优选实施例中，加热元件制造在第二磁极之上。 加热元件优选地形成有大约0.2至1.0欧姆的电阻，使得流过感应线圈和加热元件的大约40mA的电流产生大约0.3至1.6mW的加热元件的加热能量。 加热元件可以由诸如Cu，W，NiFe，NiCr和IrRh的各种材料组成。

    Laminated write gap to improve writer performance
    3.
    发明授权
    Laminated write gap to improve writer performance 失效
    叠层写差距提高作家的表现

    公开(公告)号：US07525760B2

    公开(公告)日：2009-04-28

    申请号：US11104333

    申请日：2005-04-11

    申请人： Wen-Chien Hsiao ,  Terence Lam ,  Bernd Lamberts ,  Yinshi Liu ,  Terry Olson ,  Michael Yang ,  Samuel Yuan

    发明人： Wen-Chien Hsiao ,  Terence Lam ,  Bernd Lamberts ,  Yinshi Liu ,  Terry Olson ,  Michael Yang ,  Samuel Yuan

    IPC分类号： G11B5/235

    CPC分类号： G11B5/3116 ,  G11B5/235

    摘要： Embodiments of the present invention recite a write gap structure for a magnetic recording head. In one embodiment, the write gap structure comprises at least one layer of inert material is disposed proximate to the P2 pole of a magnetic recording head. A layer of magnetic material is disposed between the layer of inert material and the P1 pedestal (P1P) of the magnetic recording head. In embodiments of the present invention, the write gap structure further comprises a second layer of inert material is disposed between the layer of magnetic material and the P1P of the magnetic recording head. In embodiments of the present invention, the write gap structure only overlies a portion of the write gap of the magnetic recording head with reference to the throat height dimension of the write gap.

    摘要翻译： 本发明的实施例叙述磁记录头的写间隙结构。 在一个实施例中，写间隙结构包括至少一层惰性材料，靠近磁记录头的P2极设置。 磁性材料层设置在惰性材料层与磁记录头的P1基座（P1P）之间。 在本发明的实施例中，写间隙结构还包括第二层惰性材料设置在磁性材料层和磁记录头的P1P之间。 在本发明的实施例中，相对于写入间隙的喉部高度尺寸，写入间隙结构仅覆盖磁记录头的写入间隙的一部分。

    System, method, and apparatus for in-situ stray magnetic field measurement
    5.
    发明申请
    System, method, and apparatus for in-situ stray magnetic field measurement 失效
    用于原位杂散磁场测量的系统，方法和装置

    公开(公告)号：US20060092543A1

    公开(公告)日：2006-05-04

    申请号：US10977678

    申请日：2004-10-29

    申请人： Xiaodong Che ,  Wen-Chien Hsiao ,  Yansheng Luo ,  Xiaoyu Sui

    发明人： Xiaodong Che ,  Wen-Chien Hsiao ,  Yansheng Luo ,  Xiaoyu Sui

    IPC分类号： G11B15/04

    CPC分类号： G11B25/043 ,  G11B33/1493

    摘要： A hard disk drive (HDD) detects and measures external stray magnetic fields with existing HDD components. After detecting a strong external magnetic field, read and write operations of the HDD are suspended, and/or other proper corrective actions are taken to minimize loss of data. To measure the stray magnetic field, the magnetic head reader is used as a field sensor. The resistance of the reader changes in the presence of the field, such as with the preamp in the HDD. The resistance also changes with temperature. If the temperature inside the HDD is measured, the resistance change due to temperature is normalized. Even without being able to measure the HDD temperature, the stray magnetic field can be measured with a top head and a bottom head in the HDD. The temperature sensitivity of the reader is thereby cancelled out.

    摘要翻译： 硬盘驱动器（HDD）用现有的HDD组件来检测和测量外部杂散磁场。 在检测到强大的外部磁场之后，HDD的读取和写入操作被暂停，和/或采取其他适当的纠正措施以最小化数据丢失。 为了测量杂散磁场，磁头阅读器被用作场传感器。 读取器的电阻会在场的存在情况下发生变化，例如使用HDD中的前置放大器。 电阻也随温度而变化。 如果测量HDD内部的温度，则由于温度导致的电阻变化被归一化。 即使不能测量HDD温度，也可以用HDD中的顶部头部和底部头部来测量杂散磁场。 因此读取器的温度敏感度被抵消。

    Shield fabrication of magnetic write heads
    8.
    发明授权
    Shield fabrication of magnetic write heads 有权
    磁写头的屏蔽制造

    公开(公告)号：US07877859B2

    公开(公告)日：2011-02-01

    申请号：US11767330

    申请日：2007-06-22

    申请人： Wen-Chien Hsiao ,  Yimin Hsu ,  Vladimir Nikitin

    发明人： Wen-Chien Hsiao ,  Yimin Hsu ,  Vladimir Nikitin

    IPC分类号： G11B5/127 ,  H04R31/00

    CPC分类号： G11B5/11 ,  G11B33/1493 ,  Y10T29/49021 ,  Y10T29/49028 ,  Y10T29/49032 ,  Y10T29/49043 ,  Y10T29/49155 ,  Y10T29/49165

    摘要： Methods are provided for fabricating a write head with a self aligned wrap around shield and a self aligned flared region of a write pole. A flare point and a track width of a write pole may be fabricated using multiple processes. The multiple processes utilize several masking structures to define the track width and the flare point of the write pole. A mask structure is formed to cover a first portion of the write pole. An edge of the mask structure adjacent to an exposed second portion of the write pole defines a flare point of the write pole. Various structures of the write head, including shield gap layers, a wrap around shield and a flared region (e.g., the yoke) of the write pole may be fabricated from the flare point defined by the mask structure.

    摘要翻译： 提供了用于制造具有围绕屏蔽件的自对准包裹和写入极的自对准扩口区域的写入头的方法。 可以使用多个工艺来制造写极点的闪点和轨道宽度。 多个过程利用几个掩模结构来定义磁道宽度和写入磁极的扩展点。 形成掩模结构以覆盖写入极的第一部分。 掩模结构的与写入极的暴露的第二部分相邻的边缘限定了写入极的扩张点。 写磁头的各种结构，包括屏蔽间隙层，环绕屏蔽层和写磁极的扩口区域（例如磁轭）可以由掩模结构限定的扩口来制造。

    Shaped trailing shield of a perpendicular recording write element
    9.
    发明申请
    Shaped trailing shield of a perpendicular recording write element 有权
    垂直记录写元件的形状的后盾

    公开(公告)号：US20070236831A1

    公开(公告)日：2007-10-11

    申请号：US11399548

    申请日：2006-04-06

    申请人： Xiaodong Che ,  Wen-Chien Hsiao ,  Yimin Hsu ,  Vladimir Nikitin

    发明人： Xiaodong Che ,  Wen-Chien Hsiao ,  Yimin Hsu ,  Vladimir Nikitin

    IPC分类号： G11B5/147

    CPC分类号： G11B5/1278 ,  G11B5/11 ,  G11B5/3116 ,  G11B5/3146

    摘要： Write elements are discussed having a write pole and an associated trailing shield. A leading side of the trailing shield faces a trailing side of the write pole. The leading side of the trailing shield has a shape such that a center portion of the leading side has less of a separation from the trailing side of the write pole than track edge portions of the leading side of the trailing shield. An exemplary shape the leading side of the trailing shield may be a convex shape when viewed from the ABS. The shape of the leading side of the trailing shield causes the trailing shield to shunt less of the magnetic field from the trailing side of the write pole at the track edges so that the written transition at the track edge will not lag behind the written transition at the track center allowing for a straighter transition.

    摘要翻译： 讨论了具有写极点和相关联的后屏蔽的写元件。 后挡板的前端面向写极的后侧。 后挡板的前侧具有这样的形状，使得前侧的中心部分比后挡板的前侧的轨道边缘部分具有比写入极的后侧更小的间隔。 当从ABS观察时，后护罩的前侧的示例性形状可以是凸形。 尾部屏蔽的前端的形状使得后屏蔽件在轨道边缘处从写入极的后侧分流较少的磁场，使得在轨道边缘处的写入的转变不会滞后于在 轨道中心允许更直接的过渡。

    Apparatus for enhancing thermal stability, improving biasing and reducing damage from electrostatic discharge in self-pinned abutted junction heads having a first self-pinned layer extending under the hard bias layers
    10.
    发明授权
    Apparatus for enhancing thermal stability, improving biasing and reducing damage from electrostatic discharge in self-pinned abutted junction heads having a first self-pinned layer extending under the hard bias layers 失效
    用于增强热稳定性，改善偏压并减少在自固定的邻接接头中的静电放电的损伤的装置，其具有在硬偏压层下延伸的第一自固位层

    公开(公告)号：US07092220B2

    公开(公告)日：2006-08-15

    申请号：US10629535

    申请日：2003-07-29

    申请人： Hardayal Singh Gill ,  Wen-Chien Hsiao ,  Jih-Shiuan Luo

    发明人： Hardayal Singh Gill ,  Wen-Chien Hsiao ,  Jih-Shiuan Luo

    IPC分类号： G11B5/39

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  B82Y40/00 ,  G11B5/3903 ,  G11B5/3932 ,  H01F10/3281 ,  H01F41/302

    摘要： A method and apparatus for enhancing thermal stability, improving biasing and reducing damage from electrical surges in self-pinned abutted junction heads. A first self-pinned layer having a first magnetic orientation is provided, wherein the first self-pinned layer has a first end, a second end and central portion. A second self-pinned layer is formed over only the central portion of the first self-pinned layer and an interlayer is disposed between the first and second self-pinned layers. A free layer is formed in a central region over the second self-pinned layer. First and second hard bias layers are formed over the first and second ends of the first self-pinned layer respectively, the first and second hard bias layer abutting the free layer, the first and second end of the first self-pinned layer extending under the hard bias layers at the first and second ends.

    摘要翻译： 一种用于增强热稳定性，改善偏压并减少自销接合接头中的电涌的损伤的方法和装置。 提供了具有第一磁性取向的第一自固位层，其中第一自固位层具有第一端，第二端和中心部分。 仅在第一自被钉扎层的中心部分上形成第二自固位层，并且中间层设置在第一和第二自固位层之间。 在第二自固位层上的中心区域形成自由层。 第一和第二硬偏压层分别形成在第一自固位层的第一和第二端上，第一和第二硬偏置层邻接自由层，第一自固位层的第一和第二端延伸在 在第一和第二端的硬偏压层。