MAGNETIC TRANSDUCER
    1.
    发明申请
    MAGNETIC TRANSDUCER 审中-公开
    磁性传感器

    公开(公告)号:WO1997011499A1

    公开(公告)日:1997-03-27

    申请号:PCT/JP1996002702

    申请日:1996-09-19

    Inventor: TDK CORPORATION

    Abstract: A magnetic transducer provided with a spin valve type magnetoresistance effect element having a specially high corrosion resistance and such a rate of change of resistance that the MR inclination is larger than 0.7 %/Oe in a 1 MH3 high-frequency magnetic field region since the pinning layer is made of antiferromagnetic iron oxide FeOx. The effect element has an extremely excellent rise characteristic of the MR curve in a zero magnetic field, a small hysteresis, and a high heat resistance. The effect of the heat resistance is further enhanced when an oxygen blocking layer is interposed between the pinning layer and a ferromagnetic layer. A magnetic transducer using a magnetoresistance effect element having a multilayered magnetic film, such as an MR head, has an output voltage which is nearly five times as high as that of a magnetic transducer using a conventional material. Therefore, an extremely highly reliable excellent MR head which reads out data magnetically recorded at an ultrahigh density of > 1 Gbit/inch is provided.

    Abstract translation: 一种具有自旋阀型磁阻效应元件的磁性换能器,其具有特别高的耐腐蚀性,并且这种磁阻变化率使得MR倾斜度大于0.7M / Oe,因为钉扎后的1 MH3高频磁场区域 层由反铁磁性氧化铁FeOx制成。 该效应元件在零磁场,小磁滞和高耐热性方面具有非常优异的MR曲线的上升特性。 当阻氧层插入在钉扎层和铁磁层之间时,耐热性的影响进一步提高。 使用具有诸如MR磁头的多层磁性膜的磁电阻效应元件的磁换能器具有的输出电压几乎是使用传统材料的磁换能器的输出电压的五倍。 因此,提供了非常可靠的优异的MR头,其以超高密度> 1Gbit / inch <2>磁性地读出数据。

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