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    • 5. 发明授权
    • Vertical contact - canted magnet magnetoresistive sensor
    • 垂直接触式磁极磁阻传感器
    • US5381291A
    • 1995-01-10
    • US202052
    • 1994-02-25
    • Timothy A. MadsenDaniel J. O'Connor
    • Timothy A. MadsenDaniel J. O'Connor
    • G01R33/09G11B5/39G11B5/127
    • G11B5/3932G01R33/09G01R33/096G11B5/3903G11B5/398
    • A magnetoresistive sensor has an air bearing surface, first and second vertical contacts having contact edges generally perpendicular to the air bearing surface, a generally rectangular magnetoresistive region having a first edge that comprises part of the air bearing surface and a plurality of additional edges which do not comprise part of the air bearing surface, and a permanent magnet layer having a magnetization vector oriented at 45.degree. with respect to the air bearing surface, wherein the plurality of additional edges are generally within the permanent magnet layer. The magnetoresistive sensor provides a relatively square read sensitivity window because the sense current is maintained parallel to the air bearing surface throughout the magnetoresistive region. In addition, the sensor is lapping intolerant because the relative positions of the first and second vertical contacts and the magnetoresistive region do not change as the air bearing surface is lapped.
    • 磁阻传感器具有空气轴承表面,第一和第二垂直触点具有大致垂直于空气支承表面的接触边缘,大致矩形的磁阻区域,其具有包含空气轴承表面的一部分的第一边缘和多个附加边缘 不包括空气轴承表面的一部分,以及具有相对于空气轴承表面定向成45度的磁化矢量的永磁体层,其中多个附加边缘通常在永磁体层内。 磁阻传感器提供相对平方的读灵敏度窗口,因为感测电流保持与整个磁阻区域中的空气轴承表面平行。 此外,由于第一和第二垂直触点和磁阻区域的相对位置随着空气轴承表面被研磨而不改变,因此传感器研磨不耐受。