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    • 10. 发明授权
    • Current-perpendicular-to-the-plane (CPP) magnetoresistive read head with multiple sensing elements for patterned-media
    • 电流垂直平面(CPP)磁阻读头,具有用于图案介质的多个感测元件
    • US08208228B2
    • 2012-06-26
    • US12565721
    • 2009-09-23
    • Stefan MaatJames Terrence OlsonHal J. Rosen
    • Stefan MaatJames Terrence OlsonHal J. Rosen
    • G11B5/39G11B5/11G11B5/265
    • G11B5/746B82Y10/00G11B5/02G11B5/3948G11B5/3977G11B5/4886G11B5/743G11B2005/0005
    • A magnetoresistive (MR) sensor or read head for a magnetic recording disk drive has multiple independent current-perpendicular-to-the-plane (CPP) MR sensing elements. The sensing elements are spaced-apart in the cross-track direction and separated by an insulating separation region so as to be capable of reading data from multiple data tracks on the disk. The sensing elements have independent CPP sense currents, each of which is directed to independent data detection electronics, respectively. Each sensing element comprises a stack of layers formed on a common electrically conducting base layer, which may be a bottom magnetic shield layer formed of electrically conducting magnetically permeable material. Each sensing element has a top electrical lead layer. A top magnetic shield layer is located above the sensing elements in contact with the top lead layers. The top shield layer is formed of soft magnetically permeable material, but is electrically insulating, so that the independent sense currents can be passed to the independent sensing elements.
    • 用于磁记录磁盘驱动器的磁阻(MR)传感器或读头具有多个独立的电流垂直于平面(CPP)MR感测元件。 感测元件在交叉轨道方向上间隔开并且被绝缘分离区分开,以便能够从盘上的多个数据轨道读取数据。 感测元件具有独立的CPP感测电流,每个电流分别被引导到独立的数据检测电子器件。 每个感测元件包括形成在公共导电基底层上的一叠层,其可以是由导电的导磁材料形成的底部磁屏蔽层。 每个感测元件具有顶部电引线层。 顶部磁屏蔽层位于与顶部引线层接触的感测元件上方。 顶部屏蔽层由软磁导电材料形成,但是是电绝缘的,使得独立的感测电流可以传递到独立的感测元件。