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    Planar writer for merged GMR recording head
    1.
    发明授权
    Planar writer for merged GMR recording head 有权
    平面作家兼并GMR录音头

    公开(公告)号：US06477007B1

    公开(公告)日：2002-11-05

    申请号：US09649985

    申请日：2000-08-29

    Applicant: Alexander M. Shukh ,  Edward S. Murdock ,  Steven A. Mastain ,  James K. Price

    Inventor： Alexander M. Shukh ,  Edward S. Murdock ,  Steven A. Mastain ,  James K. Price

    IPC: G11B5147

    CPC classification number: G11B5/3146 ,  G11B5/3109 ,  G11B5/3116 ,  G11B5/313 ,  Y10S977/934

    Abstract: A magnetic recording head having an air bearing surface comprises a writer having a substantially planar single piece top pole, a shared pole and a conductive coil. The top pole and shared pole are separated by a write gap region. A magnetic stud is positioned adjacent the write gap region near the air bearing surface. The magnetic stud provides a uniform magnetic flux supply to the write gap region. The magnetic stud has a variable height along the air bearing surface. An inner surface of the magnetic stud substantially conforms to an outer surface of the conductive coil. The shared pole includes a recess, and at least a portion of the conductive coil is positioned in the recess. The recess in the shared pole is filled with an insulator that substantially surrounds the portion of the conductive coil positioned in the recess. A capping layer is formed on the portion of the conductive coil positioned in the recess. The shared pole includes a common top surface comprising a top surface of the magnetic stud, a top surface of the insulator and a top surface of the capping layer. The common top surface is made substantially planar by chemical-mechanical polishing.

    Abstract translation: 具有空气轴承表面的磁记录头包括具有基本上平面的单片顶极，共享极和导电线圈的写入器。 顶极和共用极被写入间隙区分开。 磁性螺柱位于靠近空气轴承表面的写入间隙区域附近。 磁性螺柱为写入间隙区域提供均匀的磁通量。 磁性螺柱沿空气轴承表面具有可变的高度。 磁性螺柱的内表面基本上符合导电线圈的外表面。 共享极包括凹部，并且导电线圈的至少一部分定位在凹部中。 共享极中的凹部填充有基本上围绕定位在凹部中的导电线圈的部分的绝缘体。 在位于凹部中的导电线圈的部分上形成覆盖层。 共享极包括公共顶表面，其包括磁柱的顶表面，绝缘体的顶表面和覆盖层的顶表面。 公共顶表面通过化学机械抛光制成基本平坦的。

    Enhanced spin-valve/GMR magnetic sensor with an insulating boundary layer
    2.
    发明授权
    Enhanced spin-valve/GMR magnetic sensor with an insulating boundary layer 有权
    具有绝缘边界层的增强型自旋阀/ GMR磁传感器

    公开(公告)号：US6134090A

    公开(公告)日：2000-10-17

    申请号：US153581

    申请日：1998-09-15

    Applicant: Sining Mao ,  Edward S. Murdock

    Inventor： Sining Mao ,  Edward S. Murdock

    IPC: G01R33/09 ,  G11B5/39

    CPC classification number: B82Y25/00 ,  B82Y10/00 ,  G01R33/093 ,  G11B5/3903 ,  G11B2005/3996

    Abstract: A spin valve sensor is constructed with an electrically conductive antiferromagnetic pinning layer. A first ferromagnetic layer is placed proximate the pinning layer. A second ferromagnetic layer is included with a non-ferromagnetic electrically conductive layer placed between the first and second ferromagnetic layers. A boundary layer of electrically insulating material is placed proximate to the second layer of ferromagnetic material opposite the non-ferromagnetic electrically conductive layer. Preferred embodiments exhibit an enhanced giant magnetoresistive (GMR) effect presumably due to scattering that is more specular at the interface with the electrically insulating material.

    Abstract translation: 自旋阀传感器由导电反铁磁钉扎层构成。 第一铁磁层放置在钉扎层附近。 第二铁磁层包含在放置在第一和第二铁磁层之间的非铁磁性导电层。 电绝缘材料的边界层放置在与非铁磁性导电层相对的第二铁磁材料层附近。 优选实施例表现出增强的巨磁阻（GMR）效应，大概是由于在与电绝缘材料的界面处更镜面的散射。

    Nickel-manganese as a pinning layer in spin valve/GMR magnetic sensors
    3.
    发明授权
    Nickel-manganese as a pinning layer in spin valve/GMR magnetic sensors 失效
    镍锰作为自旋阀/ GMR磁传感器中的钉扎层

    公开(公告)号：US5764056A

    公开(公告)日：1998-06-09

    申请号：US645645

    申请日：1996-05-16

    Applicant: Sining Mao ,  Nurul Amin ,  Sunita B. Gangopadhyay ,  Edward S. Murdock

    Inventor： Sining Mao ,  Nurul Amin ,  Sunita B. Gangopadhyay ,  Edward S. Murdock

    IPC: G01R33/09 ,  G11B5/39 ,  H01F10/32 ,  H01F41/30 ,  H01L43/10 ,  G01R33/02 ,  G11B5/33 ,  H01L43/08 ,  G11B5/227

    CPC classification number: B82Y25/00 ,  B82Y10/00 ,  B82Y40/00 ,  G01R33/093 ,  H01F10/324 ,  H01F10/3268 ,  H01F41/302 ,  H01L43/10 ,  G11B2005/3996

    Abstract: A spin valve sensor and a method of fabricating the same are disclosed. The spin valve sensor includes a first layer of ferromagnetic material and a second layer of ferromagnetic material, with the second layer of ferromagnetic material having a thickness of less than about 100 .ANG.. A first layer of non-ferromagnetic conducting material is positioned between the first and second layers of ferromagnetic material. A NiMn pinning layer is positioned adjacent to the second layer of ferromagnetic material such that the pinning layer is in contact with the second layer of ferromagnetic material, wherein the NiMn pinning layer has a thickness of less than about 200 .ANG. and provides a pinning field for pinning a magnetization of the second layer of ferromagnetic material in a first direction.

    Abstract translation: 公开了一种自旋阀传感器及其制造方法。 自旋阀传感器包括铁磁材料的第一层和第二铁磁材料层，第二层铁磁材料的厚度小于约100埃。 第一层非铁磁性导电材料位于第一和第二层铁磁材料之间。 NiMn钉扎层定位成与第二铁磁材料层相邻，使得钉扎层与第二层铁磁材料接触，其中NiMn钉扎层具有小于约200的厚度，并提供钉扎场，用于 在第一方向上固定第二层铁磁材料的磁化。

    Spin valve sensor having increased GMR ratio and decreased sensitivity to crosstalk noise
    6.
    发明授权
    Spin valve sensor having increased GMR ratio and decreased sensitivity to crosstalk noise 失效
    旋转阀传感器具有增加的GMR比和降低的对串扰噪声的敏感性

    公开(公告)号：US06667616B1

    公开(公告)日：2003-12-23

    申请号：US09380457

    申请日：1999-09-02

    Applicant: Alexander M. Shukh ,  Edward S. Murdock ,  Anthony M. Mack

    Inventor： Alexander M. Shukh ,  Edward S. Murdock ,  Anthony M. Mack

    IPC: G01R3302

    CPC classification number: B82Y25/00 ,  B82Y10/00 ,  G01R33/093 ,  G11B5/3903 ,  G11B2005/3996 ,  H01F10/3268 ,  H01F10/3295 ,  H01F41/325

    Abstract: A spin valve sensor comprising a ferromagnetic free layer, a ferromagnetic pinned layer, a layer of non-ferromagnetic material positioned between the free layer and the pinned layer, and an antitferromagnetic pinning layer positioned adjacent to the pinned layer such that the pinning layer is in direct contact with the pinned layer. The free layer comprises a multi-layer stack including a non-magnetic insulating spacer positioned between a first and a second ferromagnetic sublayer. The non-magnetic insulating spacer provides a specular electron scattering effect. The first and the second ferromagnetic sublayers each have passive end regions separated by a central active region. The spin valve sensor further includes bias means positioned between the first and the second ferromagnetic sublayers in the passive end regions.

    Abstract translation: 一种自旋阀传感器，包括铁磁性自由层，铁磁性钉扎层，位于自由层和钉扎层之间的非铁磁材料层，以及邻近被钉扎层定位的抗铁磁钉扎层，使得钉扎层处于 与被钉扎层直接接触。 自由层包括多层堆叠，其包括位于第一和第二铁磁子层之间的非磁性绝缘隔离物。 非磁性绝缘间隔物提供镜面电子散射效应。 第一和第二铁磁子层各自具有由中心有源区分隔的被动端区域。 自旋阀传感器还包括位于被动端区域中的第一和第二铁磁子层之间的偏置装置。

    Highly sensitive spin valve heads using a self-aligned demag-field balance element
    7.
    发明授权
    Highly sensitive spin valve heads using a self-aligned demag-field balance element 失效
    高灵敏度的自旋阀头采用自对准的场均衡元件

    公开(公告)号：US06256176B1

    公开(公告)日：2001-07-03

    申请号：US09355784

    申请日：1999-07-27

    Applicant: Sining Mao ,  Nurul Amin ,  Edward S. Murdock

    Inventor： Sining Mao ,  Nurul Amin ,  Edward S. Murdock

    IPC: G11B539

    CPC classification number: B82Y25/00 ,  B82Y10/00 ,  G11B5/3903 ,  G11B5/3935 ,  G11B5/3938 ,  G11B2005/3996

    Abstract: A magnetic read head (30) for use in a magnetic data storage and retrieval system has a first current contact (40), a second current contact (42), a magnetoresistive read sensor (34), and a demagnetization field balance element (50). Positioned between the first and second current contacts (40, 42) are both the magnetoresistive read sensor (34) and the demagnetization field balance element (50). The demagnetization field balance element (50) is both electrically isolated from and magnetically coupled to the magnetoresistive read sensor (34).

    Abstract translation: 用于磁数据存储和检索系统的磁读头（30）具有第一电流触点（40），第二电流触点（42），磁阻读取传感器（34）和去磁场平衡元件（50） ）。 位于第一和第二电流触头（40,42）之间的是磁阻读取传感器（34）和去磁场平衡元件（50）。 去磁场平衡元件（50）与磁阻读取传感器（34）电隔离并磁耦合到磁阻读取传感器（34）。

    Recording head with throat height defined by nonmagnetic recess in shared pole
    8.
    发明授权
    Recording head with throat height defined by nonmagnetic recess in shared pole 失效
    记录头，喉部高度由共享杆上的非磁性凹槽限定

    公开(公告)号：US06621659B1

    公开(公告)日：2003-09-16

    申请号：US09664270

    申请日：2000-09-18

    Applicant: Alexander M. Shukh ,  Edward S. Murdock

    Inventor： Alexander M. Shukh ,  Edward S. Murdock

    IPC: G11B5147

    CPC classification number: G11B5/0245

    Abstract: A giant magnetoresistance recording head includes a writer having a top pole, a shared pole, a conductive coil and a write gap region. The top pole includes a first top pole piece and a second top pole piece. The second top pole piece is formed at least in part over the first top pole piece and is recessed from the air bearing surface. The first top pole piece is formed over a top flat surface of the shared pole and is separated from the shared pole by the write gap region. The shared pole has a recess on the top surface. The recess is placed under the top pole and filled with a non-magnetic material. The non-magnetic recess in the shared pole defines the throat height of the writer.

    Abstract translation: 巨磁阻记录头包括具有顶极，共享极，导电线圈和写间隙区的写入器。 顶杆包括第一顶极片和第二顶极片。 第二顶极件至少部分地形成在第一顶极件上并且从空气轴承表面凹陷。 第一顶极件形成在共享极的顶部平坦表面上，并且通过写入间隙区域与共享极分离。 共享杆在顶面有一个凹槽。 将凹槽置于顶极下方并填充非磁性材料。 共享极柱中的非磁性凹槽定义了写入器的喉部高度。

    Method of fabricating a spin valve/GMR sensor having a synthetic antiferromagnetic layer pinned by Mn-alloy
    10.
    发明授权
    Method of fabricating a spin valve/GMR sensor having a synthetic antiferromagnetic layer pinned by Mn-alloy 有权
    制造具有由Mn合金固定的合成反铁磁层的自旋阀/ GMR传感器的方法

    公开(公告)号：US06548114B2

    公开(公告)日：2003-04-15

    申请号：US09907219

    申请日：2001-07-17

    Applicant: Sining Mao ,  Anthony M. Mack ,  Brenda A. Everitt ,  Edward S. Murdock ,  Zheng Gao

    Inventor： Sining Mao ,  Anthony M. Mack ,  Brenda A. Everitt ,  Edward S. Murdock ,  Zheng Gao

    IPC: C23C1606

    CPC classification number: B82Y25/00 ,  B82Y10/00 ,  G01R33/093 ,  G11B5/3903 ,  G11B2005/3996 ,  Y10S977/934 ,  Y10T29/49046

    Abstract: A method of fabricating a spin valve sensor includes sequentially depositing, without breaking vacuum, a seed layer and an antiferromagnetic layer. Sequentially depositing the seed layer and the antiferromagnetic layer includes depositing a seed layer on a substrate; depositing a Mn-alloy layer of the antiferromagnetic layer directly on top of the seed layer; and depositing a buffer layer of the antiferromagnetic layer directly on top of the Mn-alloy layer. The seed layer, the Mn-alloy layer and the buffer layer are annealed. After annealing, a portion of the buffer layer is etched and a synthetic antiferromagnetic layer is deposited on top of the buffer layer. A spacer layer is deposited on top of the synthetic antiferromagnetic layer, and a free layer is deposited on top of the spacer layer.

    Abstract translation: 制造自旋阀传感器的方法包括在不破坏真空的情况下依次沉积种子层和反铁磁性层。 顺序地沉积种子层和反铁磁性层包括将种子层沉积在基底上; 将反铁磁层的Mn合金层直接沉积在种子层的顶部; 并将反铁磁层的缓冲层直接沉积在Mn合金层的顶部上。 种子层，Mn合金层和缓冲层退火。 在退火之后，缓冲层的一部分被蚀刻，并且合成的反铁磁层沉积在缓冲层的顶部上。 间隔层沉积在合成反铁磁性层的顶部上，并且自由层沉积在间隔层的顶部上。

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