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40 条记录 (耗时 0.019 秒)

    Tunneling magneto-resistive read head with two-piece free layer
    1.
    发明授权
    Tunneling magneto-resistive read head with two-piece free layer 有权
    隧道式磁阻读取头，具有两片自由层

    公开(公告)号：US06795280B1

    公开(公告)日：2004-09-21

    申请号：US09441901

    申请日：1999-11-17

    申请人： Dian Song ,  Nurul Amin ,  Sining Mao

    发明人： Dian Song ,  Nurul Amin ,  Sining Mao

    IPC分类号： G11B539

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3906 ,  G11B2005/3996

    摘要： A method and apparatus for a recording head using a spin-dependent tunneling (SDT) junction. The SDT junction utilizes an aluminum oxide tunnel barrier. The tunnel barrier can be formed to a thickness comparable with a typical Cu spacer layer on a spin valve. With the SDT junction, current is applied perpendicular to the plane of the film. The SDT junctions can have high magneto-resistance up to 40%. The magnetoresistive qualities of a head design incorporating the SDT junction are not directly related to head resistance, head geometry, bias current and film thickness. The method can include forming a spin tunnel barrier by fashioning a stack into a bottom electrode, defining a junction, depositing a layer of insulator, performing a photoprocess, depositing an upper electrode layer and lifting off the top electrode layer to define the electrode. The stack can include a pinned layer, a barrier layer and a free layer. The pinned layer can include NiFe. The barrier layer can include AlOx. The free layer can include Co. The junction can be defined with an ion mill and the insulator can include Al2O3. In addition, the top electrode layer can include Cu.

    摘要翻译： 一种使用自旋相关隧道（SDT）结的记录头的方法和装置。 SDT连接处使用氧化铝隧道屏障。 隧道势垒可以形成为与自旋阀上的典型Cu间隔层相当的厚度。 使用SDT结，电流垂直于膜的平面施加。 SDT结可以具有高达40％的高磁阻。 结合SDT结的头部设计的磁阻性质与磁头电阻，磁头几何形状，偏置电流和膜厚度无直接关系。 该方法可以包括通过将堆叠形成底部电极形成自旋隧道势垒，限定结，沉积绝缘体层，执行光电处理，沉积上部电极层和提起顶部电极层以限定电极。 堆叠可以包括钉扎层，阻挡层和自由层。 钉扎层可以包括NiFe。 阻挡层可以包括AlOx。 自由层可以包括公司。接合点可以用离子磨机定义，绝缘体可以包括Al2O3。 此外，顶部电极层可以包括Cu。

    Transducing head and method for forming a recessed shield for a transducing head
    2.
    发明授权
    Transducing head and method for forming a recessed shield for a transducing head 失效
    用于形成用于换能头的凹形屏蔽的转换头和方法

    公开(公告)号：US06510030B1

    公开(公告)日：2003-01-21

    申请号：US09528286

    申请日：2000-03-17

    申请人： Dian Song ,  Nurul Amin

    发明人： Dian Song ,  Nurul Amin

    IPC分类号： G11B5127

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/11 ,  G11B5/313 ,  G11B5/3146 ,  G11B5/3163 ,  G11B5/3903 ,  G11B5/3909 ,  G11B5/3912 ,  G11B5/398 ,  Y10T29/49021

    摘要： A method for forming a transducing head first requires the deposition of a bottom shield, a bottom thick gap, a bottom thin gap, a sensor, a first flux guide, a top thin gap, a top thick gap, and a top shield. After each of the layers is deposited, an air bearing portion of both the top and bottom thick gaps is removed, such that a length of the air bearing portion of the top thick gap is substantially equal to a length of the air bearing portion of the bottom thick gap. Next, an air bearing shield is deposited over the air bearing surface, the air bearing shield being in contact with the top and bottom shields, the top and bottom thick gaps, the top and bottom thin gaps, and the flux guide. Finally, the air bearing surface of the transducing head is planarized, resulting in the top and bottom thin gaps and the first flux guide each being exposed at the air bearing surface.

    摘要翻译： 用于形成换能头的方法首先需要沉积底部屏蔽层，底部厚间隙，底部薄间隙，传感器，第一磁通引导件，顶部薄间隙，顶部厚间隙和顶部屏蔽。 在沉积每个层之后，去除顶部和底部厚间隙的空气轴承部分，使得顶部厚间隙的空气轴承部分的长度基本上等于 底部厚差。 接下来，空气轴承屏蔽层沉积在空气轴承表面上，空气轴承屏蔽与顶部和底部屏蔽件，顶部和底部较厚间隙，顶部和底部薄间隙以及磁通引导件接触。 最后，换能头的空气轴承表面被平坦化，导致顶部和底部薄的间隙以及第一个磁通引导件都被暴露在空气轴承表面。

    Head to disc interface tunneling giant magnetoresistive sensor
    4.
    发明授权
    Head to disc interface tunneling giant magnetoresistive sensor 有权
    头盘式接口隧道式巨磁阻传感器

    公开(公告)号：US07522380B2

    公开(公告)日：2009-04-21

    申请号：US11152471

    申请日：2005-06-14

    申请人： Dian Song

    发明人： Dian Song

    IPC分类号： G11B5/127

    CPC分类号： G11B5/3909 ,  B82Y10/00 ,  G11B5/1278 ,  G11B5/3903 ,  G11B5/3967 ,  G11B5/743

    摘要： A transducer for magnetically reading and writing information is disclosed. The present invention eases the intricate process of wafer thin film deposition and bar lapping by proposing a transducer including a first and second member, both of which perform the reading and writing function of the transducer. The present invention provides a transducer with greatly improved magnetic efficiency by probing the media magnetization directly. The structure is inherently stable due to shape anisotropy of the members and the closure of magnetic flux at the ends of each member.

    摘要翻译： 公开了用于磁读取和写入信息的换能器。 本发明通过提出一种包括第一和第二构件的换能器来实现晶片薄膜沉积和棒研磨的复杂过程，两者都执行换能器的读和写功能。 本发明提供一种通过直接探测介质磁化强度而大大提高磁效率的传感器。 该结构由于构件的形状各向异性和每个构件的端部处的磁通的闭合而固有地稳定。

    Magnetic element with biased side shield lamination
    5.
    发明授权
    Magnetic element with biased side shield lamination 有权
    磁性元件带有侧面屏蔽层叠

    公开(公告)号：US08780508B2

    公开(公告)日：2014-07-15

    申请号：US13539099

    申请日：2012-06-29

    申请人： Dimitar Velikov Dimitrov ,  Dian Song ,  Mark William Covington

    发明人： Dimitar Velikov Dimitrov ,  Dian Song ,  Mark William Covington

    IPC分类号： G11B5/33 ,  G11B5/39

    CPC分类号： G11B5/3912 ,  G11B5/398

    摘要： A magnetic element is generally provided that can be implemented as a transducing head. Various embodiments may configure a magnetic stack having a magnetically free layer with a predetermined magnetization. A side shield lamination can be separated from the magnetic stack on an air hearing surface (ABS) and biased to a bias magnetization that opposes the predetermined magnetization.

    摘要翻译： 通常提供可以实现为换能头的磁性元件。 各种实施例可以构造具有预定磁化强度的磁性层的磁性堆叠。 侧屏蔽叠片可以与空气听觉表面（ABS）上的磁性堆叠分离，并被偏压到与预定磁化相对的偏置磁化强度。

    Enhanced Magnetic Sensor Biasing Yoke
    7.
    发明申请
    Enhanced Magnetic Sensor Biasing Yoke 有权
    增强磁传感器偏置轭

    公开(公告)号：US20130027031A1

    公开(公告)日：2013-01-31

    申请号：US13194782

    申请日：2011-07-29

    申请人： Dimitar V. Dimitrov ,  Dian Song ,  Jason B. Gadbois

    发明人： Dimitar V. Dimitrov ,  Dian Song ,  Jason B. Gadbois

    IPC分类号： G01R33/09 ,  B23P11/00 ,  G01R33/02

    CPC分类号： G01R33/093 ,  G01R33/098

    摘要： An apparatus and associated method are generally directed to a magnetic sensor. A sensor may have a stack with an air bearing surface (ABS) and a biasing surface opposite the ABS. A biasing yoke can be disposed between a biasing magnet and the stack with the biasing magnet having a lower magnet moment than the biasing yoke.

    摘要翻译： 一种装置和相关方法通常涉及磁传感器。 传感器可具有具有空气轴承表面（ABS）和与ABS相对的偏置表面的堆叠。 偏置磁轭可以设置在偏置磁体和堆叠之间，偏置磁体具有比偏置磁轭低的磁矩。

    Dedicated ID-OD writer with beveled pole tips and method of manufacture
    8.
    发明授权
    Dedicated ID-OD writer with beveled pole tips and method of manufacture 有权
    专用ID-OD刻录机，带斜角极尖和制造方法

    公开(公告)号：US08310782B2

    公开(公告)日：2012-11-13

    申请号：US12098114

    申请日：2008-04-04

    申请人： Dian Song ,  Huaqing Yin ,  Ralph William Cross

    发明人： Dian Song ,  Huaqing Yin ,  Ralph William Cross

    IPC分类号： G11B5/187 ,  G11B5/29

    CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/1872 ,  G11B5/315 ,  G11B5/6064 ,  G11B2005/0005

    摘要： A transducing head for use with a storage medium rotatable about an axis includes first and second writers for writing to the storage medium. The first writer is configured for dedicated writing to a first radial region of the storage medium, and the second writer is configured for dedicated writing to a second radial region of the storage medium. The second radial region is located radially outward from the first radial region.

    摘要翻译： 与围绕轴可旋转的存储介质一起使用的转换头包括用于向存储介质写入的第一和第二写入器。 第一写入器被配置用于对存储介质的第一径向区域进行专用写入，并且第二写入器被配置为专用写入存储介质的第二径向区域。 第二径向区域从第一径向区域径向向外定位。