Brinks Hofer Gilson & Lione
Thin film magnetic head having hard films for magnetizing a shield layer in a single domain state
 Hard films consisting of a permanent magnet material are formed on both the sides of shield layers to orient the magnetization of the shield layers in an easy axis of magnetization (X direction), thereby putting the shield layers into a single domain state. Therefore, anisotropic dispersion does not occur in the shield layers, the hysteresis of a thin film magnetic head is eliminated as a whole, a coercive force becomes very small, and the magnetic reversibilities of the shield layers in a direction perpendicular to the drawing paper surface becomes preferable. For this reason, the reliability of a reproduced output signal from a magnetoresistance element layer is improved. 
Alps Electric Co., Ltd.
G G
G11B G11B
inventional inventional
Toshinori Masamichi
Watanabe Saito