Giant magnetoresistive sensor having selfconsistent demagnetization fields
    2.
    发明授权
    Giant magnetoresistive sensor having selfconsistent demagnetization fields 失效
    巨磁阻传感器具有自相消磁场

    公开(公告)号:US06914759B2

    公开(公告)日:2005-07-05

    申请号:US09843370

    申请日:2001-04-26

    摘要: The present invention is directed to a spin valve sensor for use in a data storage system, that is adapted to receive a sense current and produce a GMR effect in response to applied magnetic fields. The spin valve sensor includes first and second ferromagnetic free layers, a spacer layer positioned between the first and second ferromagnetic free layers, and a biasing component. The first ferromagnetic free layer has a magnetization (M1) in a first direction, when in a quiescent (non-biased) state. The second ferromagnetic free layer has a magnetization (M2) in a second direction that is anti-parallel to the first direction, when in a quiescent (non biased) state.

    摘要翻译: 本发明涉及一种用于数据存储系统中的自旋阀传感器,其适于接收感测电流并响应所施加的磁场产生GMR效应。 自旋阀传感器包括第一和第二铁磁自由层,位于第一和第二铁磁自由层之间的间隔层和偏置部件。 当处于静止(非偏置)状态时,第一铁磁自由层在第一方向上具有磁化(M SUB 1 H)。 当处于静止(非偏置)状态时,第二铁磁自由层在与第一方向反平行的第二方向上具有磁化(M SUB 2 N)。

    Dual layer magnetic exchange stabilization for MR heads
    3.
    发明授权
    Dual layer magnetic exchange stabilization for MR heads 失效
    MR磁头的双层磁交换稳定

    公开(公告)号:US6111730A

    公开(公告)日:2000-08-29

    申请号:US945449

    申请日:1997-10-22

    IPC分类号: G11B5/39

    CPC分类号: G11B5/3932 G11B5/3903

    摘要: A magnetoresistive (MR) head (100) for use in a data storage system includes an MR sensor layer (170) and a soft adjacent layer (SAL) (120) disposed along a length of the MR sensor layer and adapted to vertically bias the MR sensor layer. A spacer layer (130) is formed between the MR sensor layer and the SAL in a central region (200) of the MR head. The MR sensor layer and the SAL are independently stabilized by first and second permanent magnet (PM) layers (160, 140), each formed in contact with one of the SAL and the MR sensor layer in first and second wing regions (210, 220) of the MR head. This allows a layer of low resistivity material (150) to be placed between the first and second PM layers in the first and second wing regions in order to lower the resistance of the MR head.

    摘要翻译: PCT No.PCT / US97 / 15428 Sec。 371日期1997年10月22日第 102(e)1997年10月22日PCT PCT 1997年9月2日PCT公布。 出版物WO98 / 49676 日期1998年11月5日用于数据存储系统的磁阻(MR)头(100)包括沿着MR传感器层的长度设置的MR传感器层(170)和软相邻层(SAL)(120) 适于垂直偏置MR传感器层。 在MR头的中心区域(200)中的MR传感器层和SAL之间形成间隔层(130)。 MR传感器层和SAL通过第一和第二永磁体(PM)层(160,140)独立地稳定,每个永久磁体层(160,140)形成为与第一和第二翼区域(210,220)中的SAL和MR传感器层中的一个接触 )MR头。 这允许一层低电阻率材料(150)放置在第一和第二翼区域中的第一和第二PM层之间,以便降低MR磁头的电阻。