Patent ID: 9202480
Filing Date: 2015-12-01
Classification: G11B,Y10T

Abstract:
1. A method for forming a write structure on a multi-layer structure comprising a substrate and an insulator layer on the substrate, the method comprising: forming a hard mask layer over the insulator layer; performing a first patterning process to form a pole and yoke opening in the hard mask layer; performing a second patterning process comprising forming a photoresist pattern on the hard mask layer, the photoresist pattern exposing the rounded corners of the pole and yoke opening in the hard mask layer, and removing a portion of the hard mask layer exposed by the photoresist pattern to remove the rounded corners of the pole and yoke opening in the hard mask layer; removing a portion of the insulator layer corresponding to the pole and yoke opening in the hard mask layer to form a trench in the insulator layer; and filling the trench with a magnetic material.