Coupled soft bias scissor type sensor

    公开(公告)号:US10096331B2

    公开(公告)日:2018-10-09

    申请号:US15709359

    申请日:2017-09-19

    IPC分类号: G11B5/39 G11B5/127

    摘要: A magnetic read head is provided, comprising a bottom magnetic shield, a first free magnetic layer, a second free magnetic layer, and a top magnetic shield, arranged from bottom to top in this order in a stacking direction from a leading side to a trailing side of the read head. A non-soft bias layer is positioned below the top magnetic shield and on a back side of the first and the second free magnetic layers. The top magnetic shield has a unidirectional anisotropy, the magnetic moments of the top and the bottom magnetic shields are canted relative to a plane of the first and the second free magnetic layers, and the top and the bottom magnetic shields are decoupled from the non-soft bias layer and not magnetically coupled to a soft bias layer.

    Coupled Soft Bias Scissor Type Sensor
    2.
    发明申请

    公开(公告)号:US20180005652A1

    公开(公告)日:2018-01-04

    申请号:US15709359

    申请日:2017-09-19

    IPC分类号: G11B5/39 G11B5/127

    摘要: A magnetic read head is provided, comprising a bottom magnetic shield, a first free magnetic layer, a second free magnetic layer, and a top magnetic shield, arranged from bottom to top in this order in a stacking direction from a leading side to a trailing side of the read head. A non-soft bias layer is positioned below the top magnetic shield and on a back side of the first and the second free magnetic layers. The top magnetic shield has a unidirectional anisotropy, the magnetic moments of the top and the bottom magnetic shields are canted relative to a plane of the first and the second free magnetic layers, and the top and the bottom magnetic shields are decoupled from the non-soft bias layer and not magnetically coupled to a soft bias layer.