Patent ID: 6368519
Filing Date: 2002-04-09
Classification: C23F,G11B,Y10T

Abstract:
A method for manufacturing a magnetic head, the method comprising the steps of:presenting a substrate having a pair of yoke cores formed on the substrate so as to oppose each other, wherein a non-magnetic material is disposed between the pair of yoke cores so as to define a magnetic gap, and wherein the non-magnetic material comprises a first selectivity ratio with respect to reactive ion etching; forming on the substrate a non-magnetic film made of the non-magnetic material; forming on the non-magnetic film a high-selectivity film made of a high-selectivity material, the high-selectivity material comprising a selectivity ratio with respect to reactive ion etching that is higher than that of the non-magnetic material; patterning the high-selectivity film into a predetermined shape to form a mask pattern; and using the mask pattern to etch the non-magnetic film by reactive ion etching.