Patent ID: 7378028
Filing Date: 2008-05-27
Classification: G11B,Y10T

Abstract:
1. A method of fabricating a patterned magnetic layer, comprising sequential steps of: (a) providing a workpiece comprising a non-magnetic substrate, at least one layer of magnetic material overlying a surface of said substrate, and a layer of a non-magnetic material overlying said at least one layer of magnetic material; (b) forming a layer of a mask material on said layer of non-magnetic material; (c) forming a topographical pattern comprising a plurality of recesses in said layer of mask material; (d) selectively removing portions of said layer of non-magnetic material proximate lower portions of said recesses in said layer of mask material, thereby exposing selected portions of said at least one layer of magnetic material; (e) treating said exposed portions of said at least one layer of magnetic material with a liquid to oxidize the exposed portions and to form substantially non-magnetic material in the exposed portions; and (f) removing said topographically patterned layer of mask material.