Patent ID: 6125009
Filing Date: 2000-09-26
Classification: B82Y,G11B

Abstract:
A magnetoresistive effect composite head, comprising:a reproducing head portion having a pair of magnetic shields and a magnetoresistive effect element, said pair of magnetic shields opposing each other through a predetermined gap, and said magnetoresistive effect element being sandwiched and stacked between said pair of magnetic shields with a magnetic spacer layer; anda recording head portion using one of said pair of magnetic shields as a first magnetic pole and having a second magnetic pole formed on a surface of said first magnetic pole opposite to said magnetoresistive effect element through a magnetic gap, said recording head portion recording information on a recording medium by a magnetic field generated in said magnetic gap;wherein said magnetoresistive effect element includes a central region made of a spin-valve element to sense a medium field, and end portions for supplying a bias field and a current to said central region;wherein one of said magnetic shields comprises a magnetic film containing a major component Co--M, wherein M is at least one element selected from the group consisting of elements Ti, V, Cr, Zr, Nb, Hf, Ta, and W; andwherein directions of magnetic anisotropies of said magnetic shield and said second magnetic pole are perpendicular to a direction of the medium field, a magnetization direction of a magnetic pinned layer as part of said magnetoresistive effect head being in parallel to a direction of the medium field.