Patent ID: 8201320
Filing Date: 2012-06-19
Classification: G11B,Y10T

Abstract:
1. A method for manufacturing a magnetic write head, comprising: providing a substrate; forming a leading magnetic shield on the substrate; depositing a RIEable fill layer over the leading magnetic shield; forming a trench in the RIEable fill layer; depositing a non-magnetic track width reducing layer into the trench in the RIEable fill layer; electroplating a magnetic material over the non-magnetic track width reducing layer and into the trench to form a magnetic write pole; forming a non-magnetic step layer over a portion of the write pole, the non-magnetic step layer having a front edge that is recessed from an air bearing surface plane; performing a first ion milling to form a first tapered trailing edge surface portion on the write pole; performing a reactive ion etching to remove the RIEable fill layer; depositing a layer of alumina over the write pole and the non-magnetic step layer; performing a second ion milling to preferentially remove horizontally disposed portions of the alumina layer, thereby forming a non-magnetic bump on the front edge of the non-magnetic step layer and over the first tapered trailing edge surface portion; performing a third ion milling to form a second tapered trailing edge surface portion extending from the non-magnetic bump layer to the air bearing surface plane; depositing a non-magnetic trailing gap layer; and forming a magnetic trailing shield over the write pole, the magnetic trailing shield contacting the exposed portion of the leading magnetic shield.