Patent ID: 6700758
Filing Date: 2004-03-02
Classification: B82Y,G11B

Abstract:
A magnetoresistive effect type of head having a magnetoresistive effect element offering a resistive change according to intensity of an external magnetic field, for detecting a magnitude of a resistance of the magnetoresistive effect element to detect intensity of a magnetic field,wherein said magnetoresistive effect element consists of a flat multi-layer film in which a free magnetic layer changing in a direction of a magnetization in accordance with the external magnetic field is set up to a lowest layer, and said magnetoresistive effect type of head comprises: a non-magnetic substrate; an insulating layer contacting a center portion of a lower surface at a substrate side of said free magnetic layer; a pair of electrode layers for conducting a current through said magnetoresistive effect element, said pair of electrode layers being formed at a position interposing said insulating layer therebetween contacting both edge portions of the lower surface at the substrate side of said free magnetic layer, and being formed with a same surface height as a surface height of said insulating layer; and a pair of magnetic wall control layers for suppressing a movement of a magnetic wall of said free magnetic layer, said pair of magnetic wall control layers being formed to extend interposing said magnetoresistive effect element therebetween.