Patent ID: 6267824
Filing Date: 2001-07-31
Classification: B82Y,G11B

Abstract:
A method of manufacturing 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 on a slider main body made of a ceramic material through a gap, and said magnetoresistive effect element being sandwiched and stacked between said magnetic shields with a magnetic spacer layer made of an insulator, anda recording head portion using one of said 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 means of a magnetic field generated in said magnetic gap,said method of manufacturing said composite head comprising the steps of:after a magnetic film constituting one of said magnetic shields is formed, performing a heat treatment while applying a field within a plane of one of said magnetic shields in a direction perpendicular to a recording medium field;after a stacked film constituting said magnetoresistive effect element is formed, performing a heat treatment while applying a field in a direction of magnetization of a magnetic pinned layer as part of said magnetoresistive effect head;after a magnetic film constituting the other of said magnetic shields and serving as said first magnetic pole as well is formed, performing a heat treatment while applying a field within a plane of the other of said magnetic shields in a direction perpendicular to said recording medium field;after a magnetic film constituting said second magnetic pole is formed, performing a heat treatment while applying a field within the plane of the other of said magnetic shields in a direction perpendicular to said recording medium field; andperforming a heat treatment while applying a field in a direction of magnetization of said magnetic pinned layer of said magnetoresistive effect element.