Patent ID: 8323727
Filing Date: 2012-12-04
Classification: C25D,G11B,Y10T

Abstract:
1. A method for manufacturing a magnetic write head, comprising: depositing a magnetic write pole layer; forming a non-magnetic step layer over the magnetic write pole layer, the non-magnetic step layer having a front edge surface that is removed from an air hearing surface plane such that the non-magnetic step layer does not extend to the air bearing surface plane; forming first and second sides on the magnetic write pole layer to define a write pole; depositing a layer or Ru; performing a first ion milling to preferentially remove horizontally disposed portions of the Ru layer, leaving a Ru bump at the front edge surface of the non-magnetic step layer and leaving first and second Ru side walls formed at the sides of the write pole; performing a second ion milling to form a first tapered portion on the write pole layer; depositing a layer of alumina; performing a third ion milling to remove horizontally disposed portions of the alumina layer leaving an alumina bump at an edge of the Ru bump and leaving first and second alumina side walls adjacent to the first and second Ru side walls; performing a fourth ion milling to form a second tapered portion on the write pole depositing a non-magnetic trailing gap layer; and forming a trailing, wrap around-magnetic shield over the non-magnetic gap layer.