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    • 3. 发明申请
    • SELECTIVE PULSE INTERDIFFUSION FOR MAGNETORESISTIVE SENSORS
    • 磁传感器的选择性脉冲间隔
    • WO1995014298A1
    • 1995-05-26
    • PCT/US1994012349
    • 1994-11-03
    • MAXTOR CORPORATION
    • MAXTOR CORPORATIONVOEGELI, OttoTZANAVARAS, George
    • G11B05/39
    • G11B5/398G11B5/399Y10T29/49032Y10T29/49034Y10T29/49044
    • A selective pulse interdiffusion process for magnetoresistive transducers. A magnetoresistive transducer has an active sensor region comprised of two separate layers of different materials. Because the resistance of the active region varies in relation to an external magnetic field, data stored on a magnetic disk can be read. Two passive end regions abutting either side of and flush with the active region are implemented to bias the transducer. The two end regions are initially comprised of the same materials making up the active region. These materials are interdiffused, giving it permanent magnetic properties for biasing the transducer. The interdiffusion is accomplished by selectively passing short pulses of current through the end regions. The heating causes the end regions to interdiffuse. By thusly pulsing the current, lateral heating of the active region is minimized. The selective pulse interdiffusion process can be applied simultaneously to a number of magnetoresistive elements which are chained together in the fabrication process.
    • 用于磁阻换能器的选择性脉冲相互扩散过程。 磁阻换能器具有由两个分开的不同材料层组成的有源传感器区域。 由于有源区的电阻相对于外部磁场而变化,因此可以读取存储在磁盘上的数据。 实现了与有源区域相邻并与其齐平的两个被动端区域以偏置换能器。 两个端部区域最初由构成活性区域的相同材料组成。 这些材料是相互扩散的,赋予它永久磁性以偏置传感器。 通过选择性地将短脉冲的电流通过端部区域来实现相互扩散。 加热导致端部区域相互扩散。 通过脉冲电流,有源区域的横向加热最小化。 选择性脉冲相互扩散处理可以同时应用于在制造过程中链接在一起的多个磁阻元件。