Patent ID: 6564445
Filing Date: 2003-05-20
Classification: G11B,Y10T

Abstract:
A method for manufacturing a magnetic head which includes a lower write pole having a projection, an upper write pole having a projection opposed to the projection of the lower write pole, and a magnetic gap interposed between the projection of the upper write pole and the projection of the upper write pole, comprising the steps of:forming the magnetic gap on the projection of the lower write pole; forming a non-magnetic material layer on the lower write pole, the non-magnetic material layer having a projection on its top surface in positional alignment with the projection of the lower write pole; forming a mask layer on the non-magnetic material layer, the mask layer having an opening in which the top surface of the projection of the non-magnetic material layer is exposed; forming a first recess in the non-magnetic material layer by isotropically etching the non-magnetic material layer through the opening of the mask layer; forming a second recess down from the bottom of the first recess by anisotropically etching the non-magnetic material layer through the opening of the mask layer; and forming the projection of the upper write pole by burying a magnetic material in the second recess and the first recess.