Nickel-manganese as a pinning layer in spin valve/GMR magnetic sensors
    1.
    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

    摘要: 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.

    摘要翻译: 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。

    Highly sensitive spin valve heads using a self-aligned demag-field balance element
    2.
    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

    IPC分类号: G11B539

    摘要: 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).

    摘要翻译: 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)。

    Discrete track media
    4.
    发明授权
    Discrete track media 有权
    离散轨道媒体

    公开(公告)号:US08298611B2

    公开(公告)日:2012-10-30

    申请号:US12178443

    申请日:2008-07-23

    申请人: Nurul Amin Sining Mao

    发明人: Nurul Amin Sining Mao

    IPC分类号: G11B5/00

    摘要: A method of fabricating a discrete track magnetic recording media. A base layer is provided onto which repeating and alternating magnetic layer and non-magnetic layers are deposited. The thickness of the magnetic layer corresponds to the width of the track of the recording media. A cylindrical rod can be used as the base layer, such that the alternating magnetic and non-magnetic layers spiraling or concentric layers around the rod. The resulting media layer can be cut or sliced into individual magnetic media or used to imprint other media discs with the discrete pattern of the media layer.

    摘要翻译: 一种制造离散轨道磁记录介质的方法。 提供基层,沉积重复和交替的磁性层和非磁性层。 磁性层的厚度对应于记录介质的轨道的宽度。 可以使用圆柱形棒作为基层,使得交替的磁性和非磁性层围绕杆螺旋或同心层。 所得到的介质层可以被切割或切成单独的磁性介质,或用于用介质层的离散图案印刷其它介质盘。

    Differential CPP reader for perpendicular magnetic recording
    5.
    发明申请
    Differential CPP reader for perpendicular magnetic recording 有权
    用于垂直磁记录的差分CPP读码器

    公开(公告)号:US20050105219A1

    公开(公告)日:2005-05-19

    申请号:US10715695

    申请日:2003-11-18

    摘要: A differential read head comprises one tri-layer reader or a plurality of tri-layer readers operating in a current perpendicular to plane (CPP) mode. The tri-layer readers each comprise a first free layer, a second free layer, and a nonmagnetic layer positioned therebetween. A nonmagnetic spacer means is positioned between the plurality of tri-layer readers for electrically connecting the plurality of tri-layer readers in series such that a single CPP sense current representing a differential signal flows serially through the read head. With a single tri-layer reader, the free layers are spaced by a width substantially similar to the transition width of the magnetic medium.

    摘要翻译: 差分读取头包括在垂直于平面(CPP)模式的电流中操作的一个三层读取器或多个三层读取器。 三层读取器各自包括位于其间的第一自由层,第二自由层和非磁性层。 非磁性间隔装置位于多个三层读取器之间,用于串联电连接多个三层读取器,使得表示差分信号的单个CPP感测电流串行流过读取头。 使用单个三层读取器,自由层间隔开与磁介质的过渡宽度基本相似的宽度。

    Tunneling magneto-resistive read head with two-piece free layer
    6.
    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

    IPC分类号: G11B539

    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。

    Discrete Track Media
    8.
    发明申请
    Discrete Track Media 审中-公开
    离散轨道媒体

    公开(公告)号:US20130017413A1

    公开(公告)日:2013-01-17

    申请号:US13620499

    申请日:2012-09-14

    申请人: Nurul Amin Sining Mao

    发明人: Nurul Amin Sining Mao

    IPC分类号: G11B5/673

    摘要: A method of fabricating a discrete track magnetic recording media. A base layer is provided onto which repeating and alternating magnetic layer and non-magnetic layers are deposited. The thickness of the magnetic layer corresponds to the width of the track of the recording media. A cylindrical rod can be used as the base layer, such that the alternating magnetic and non-magnetic layers spiraling or concentric layers around the rod. The resulting media layer can be cut or sliced into individual magnetic media or used to imprint other media discs with the discrete pattern of the media layer.

    摘要翻译: 一种制造离散轨道磁记录介质的方法。 提供基层,沉积重复和交替的磁性层和非磁性层。 磁性层的厚度对应于记录介质的轨道的宽度。 可以使用圆柱形棒作为基层,使得交替的磁性和非磁性层围绕杆螺旋或同心层。 所得到的介质层可以被切割或切成单独的磁性介质,或用于用介质层的离散图案印刷其它介质盘。

    Laminated shields with antiparallel magnetizations
    9.
    发明授权
    Laminated shields with antiparallel magnetizations 有权
    具有反平行磁化的层压屏蔽

    公开(公告)号:US06456467B1

    公开(公告)日:2002-09-24

    申请号:US09723056

    申请日:2000-11-27

    申请人: Sining Mao Nurul Amin

    发明人: Sining Mao Nurul Amin

    IPC分类号: G11B5127

    摘要: A thin film structure suitable for use as a shield for a read element of a transducing head has an first ferromagnetic layer, a second ferromagnetic layer and a first decoupling layer. The first decoupling layer is positioned between the first ferromagnetic layer and the second ferromagnetic layer. An easy axis of the first ferromagnetic layer is substantially parallel to an easy axis of the second ferromagnetic layer. The first decoupling layer causes a magnetization of the first ferromagnetic layer to be substantially antiparallel to a magnetization of the second ferromagnetic layer.

    摘要翻译: 适合用作转换头的读取元件的屏蔽的薄膜结构具有第一铁磁层,第二铁磁层和第一解耦层。 第一去耦层位于第一铁磁层和第二铁磁层之间。 第一铁磁层的易轴基本上平行于第二铁磁层的容易轴。 第一解耦层使得第一铁磁层的磁化与第二铁磁层的磁化基本上反平行。

    DISCRETE TRACK MEDIA
    10.
    发明申请
    DISCRETE TRACK MEDIA 有权
    分离轨道介质

    公开(公告)号:US20100021767A1

    公开(公告)日:2010-01-28

    申请号:US12178443

    申请日:2008-07-23

    申请人: Nurul Amin Sining Mao

    发明人: Nurul Amin Sining Mao

    IPC分类号: G11B5/66 B05D5/12 B26D3/00

    摘要: A method of fabricating a discrete track magnetic recording media. A base layer is provided onto which repeating and alternating magnetic layer and non-magnetic layers are deposited. The thickness of the magnetic layer corresponds to the width of the track of the recording media. A cylindrical rod can be used as the base layer, such that the alternating magnetic and non-magnetic layers spiraling or concentric layers around the rod. The resulting media layer can be cut or sliced into individual magnetic media or used to imprint other media discs with the discrete pattern of the media layer.

    摘要翻译: 一种制造离散轨道磁记录介质的方法。 提供基层,沉积重复和交替的磁性层和非磁性层。 磁性层的厚度对应于记录介质的轨道的宽度。 可以使用圆柱形棒作为基层,使得交替的磁性和非磁性层围绕杆螺旋或同心层。 所得到的介质层可以被切割或切成单独的磁性介质,或用于用介质层的离散图案印刷其它介质盘。