Patent ID: 7419891
Filing Date: 2008-09-02
Classification: B82Y,G11B,H01L

Abstract:
1. A method for providing a magnetic element comprising; providing a magnetic element stack including a plurality of layers; depositing a stop layer on the magnetic element stack; providing a dielectric antireflective coating (DARC) layer on the stop layer; forming a single layer mask having a first width for defining the magnetic element on a first portion of the DARC layer; removing a second portion of the DARC layer not covered by the single layer mask, the first portion of the DARC layer covering a first portion of the stop layer; continuing removal of the DARC layer until the first portion has a second width not larger than the first width; removing a second portion of the stop layer not covered by the first portion of the DARC layer to form a third portion of the stop layer, the third portion having a third width greater than or equal to the second width; and defining the magnetic element using at least the third portion of stop layer as a mask.