Method and system for providing a read sensor having a low magnetostriction free layer
    1.
    发明授权
    Method and system for providing a read sensor having a low magnetostriction free layer 有权
    用于提供具有低磁致伸缩自由层的读取传感器的方法和系统

    公开(公告)号:US08194365B1

    公开(公告)日:2012-06-05

    申请号:US12553897

    申请日:2009-09-03

    IPC分类号: G11B5/39

    摘要: A method and system for providing a magnetic structure in magnetic transducer is described. The magnetic structure includes a pinned layer, a nonmagnetic spacer layer, and a free layer. The nonmagnetic spacer layer is between the pinned layer and the free layer. The free layer includes a first magnetic layer, a second magnetic layer, and a magnetic insertion layer between the first magnetic layer and the second magnetic layer. The first magnetic layer has a first magnetostriction. The second magnetic layer has a second magnetostriction opposite to the first magnetostriction. The magnetic insertion layer provides a growth texture barrier between the first magnetic layer and the second magnetic layer.

    摘要翻译: 描述了一种用于在磁换能器中提供磁结构的方法和系统。 磁结构包括钉扎层,非磁性间隔层和自由层。 非磁性间隔层位于被钉扎层和自由层之间。 自由层包括在第一磁性层和第二磁性层之间的第一磁性层,第二磁性层和磁性插入层。 第一磁性层具有第一磁致伸缩。 第二磁性层具有与第一磁致伸缩相反的第二磁致伸缩。 磁性插入层在第一磁性层和第二磁性层之间提供生长结构屏障。

    Magnetoresistive sensors having an improved free layer
    2.
    发明授权
    Magnetoresistive sensors having an improved free layer 有权
    具有改进自由层的磁阻传感器

    公开(公告)号:US08498084B1

    公开(公告)日:2013-07-30

    申请号:US12506978

    申请日:2009-07-21

    IPC分类号: G11B5/127

    摘要: A magnetoresistive sensor having a novel free layer and a method of producing the same are disclosed. The magnetoresistive sensor comprises a pinned layer, a barrier layer disposed over the pinned layer, and a free layer disposed over the barrier layer. The free layer comprises a first magnetic layer disposed over the barrier layer. The first magnetic layer has a positive spin polarization, a positive magnetostriction, and a polycrystalline structure. The free layer further comprises a second magnetic layer disposed over the first magnetic layer. The second magnetic layer has a negative magnetostriction and comprises at least cobalt (Co) and boron (B).

    摘要翻译: 公开了一种具有新型自由层的磁阻传感器及其制造方法。 磁阻传感器包括被钉扎层,设置在钉扎层上的阻挡层和设置在阻挡层上的自由层。 自由层包括设置在阻挡层上的第一磁性层。 第一磁性层具有正自旋极化,正磁致伸缩和多晶结构。 自由层还包括设置在第一磁性层上的第二磁性层。 第二磁性层具有负的磁致伸缩,并且至少包括钴(Co)和硼(B)。

    TMR read head structures with differential stripe heights
    4.
    发明授权
    TMR read head structures with differential stripe heights 有权
    TMR读取具有差分条纹高度的头结构

    公开(公告)号:US08194366B1

    公开(公告)日:2012-06-05

    申请号:US12579315

    申请日:2009-10-14

    IPC分类号: G11B5/33

    摘要: A tunneling magnetoresistance (TMR) read head and a method of producing the same are disclosed. A free layer having a free layer stripe height is provided, the free layer having a first side and a second side. A tunneling barrier layer is formed adjacent to the first side of the free layer, the tunneling barrier layer having a first side and a second side, the second side of the tunneling barrier layer facing the first side of the free layer. A pinned stack is formed adjacent to the first side of the tunneling barrier layer. The pinned stack comprises at least one magnetic layer having a current path stripe height that is less than the free layer stripe height.

    摘要翻译: 公开了一种隧道磁阻(TMR)读头及其制造方法。 提供具有自由层条纹高度的自由层,自由层具有第一侧和第二侧。 隧道势垒层邻近自由层的第一侧形成,隧道势垒层具有第一侧和第二侧,隧道势垒层的第二面面向自由层的第一侧。 在隧道势垒层的第一侧附近形成钉扎层。 钉扎堆叠包括至少一个具有小于自由层条纹高度的电流路径条纹高度的磁性层。

    Discrete track media
    7.
    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。

    Magnetoresistive sensor with reduced operating temperature
    8.
    发明授权
    Magnetoresistive sensor with reduced operating temperature 失效
    具有降低工作温度的磁阻传感器

    公开(公告)号:US07064934B2

    公开(公告)日:2006-06-20

    申请号:US10459820

    申请日:2003-06-12

    IPC分类号: G11B5/39

    摘要: A magnetoresistive (MR) sensor having reduced operating temperature is disclosed. The MR sensor, which includes an MR stack having a magnetoresistive layer, is configured to operate in a current-perpendicular-to-plane (CPP) mode wherein a sense current flows substantially perpendicular to a longitudinal plane of the magnetoresistive layer. The MR sensor further includes a thermal sink layer positioned with respect to the MR stack to reduce an operating temperature of the magnetoresistive sensor. The thermal sink layer is made of a material having high thermal conductivity, and is preferably separated from the MR stack by a metallic cap or seed layer.

    摘要翻译: 公开了具有降低的工作温度的磁阻(MR)传感器。 包括具有磁阻层的MR堆叠的MR传感器被配置为以电流垂直于平面(CPP)模式工作,其中感测电流基本上垂直于磁阻层的纵向平面流动。 MR传感器还包括相对于MR堆叠定位的散热层,以降低磁阻传感器的工作温度。 散热层由具有高导热性的材料制成,并且优选地通过金属盖或种子层与MR堆叠分离。

    Differential CPP reader for perpendicular magnetic recording
    9.
    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。

    Structures and materials to stabilize active layers in VGMR head using AFM transverse bias
    10.
    发明授权
    Structures and materials to stabilize active layers in VGMR head using AFM transverse bias 有权
    使用AFM横向偏压来稳定VGMR头中有源层的结构和材料

    公开(公告)号:US06738235B1

    公开(公告)日:2004-05-18

    申请号:US09813411

    申请日:2001-03-21

    申请人: Sining Mao

    发明人: Sining Mao

    IPC分类号: G11B5127

    CPC分类号: G11B5/3929

    摘要: A stabilized vertical GMR head is provided and includes a GMR stack having a pair of free magnetic layers having a first edge and a second edge. A pair of soft magnetic layers is also included and positioned so that one of the soft magnetic layers is adjacent to the first edge and another of the soft magnetic layers is adjacent to the second edge. A pair of AFM layers is included and positioned so that one of the AFM layers is adjacent to one of said soft magnetic layers and another of said AFM layers being adjacent to other of said soft magnetic layers.

    摘要翻译: 提供稳定的垂直GMR磁头,并且包括具有一对具有第一边缘和第二边缘的自由磁性层的GMR堆叠。 还包括并定位一对软磁性层,使得一个软磁性层与第一边缘相邻,另一个软磁性层与第二边缘相邻。 包括并定位一对AFM层,使得AFM层中的一个与所述软磁性层中的一个相邻,并且所述AFM层中的另一个与所述软磁性层中的其它层相邻。