Patent ID: 8986556
Filing Date: 2015-03-24
Classification: B82Y,G11B

Abstract:
1. A method of forming a TAMR (thermally assisted magnetic recording) write head comprising: providing a magnetic write pole; using a first etching process, etching a narrow tip at an ABS end of said write pole, said narrow tip being a rectangular prism having a cross-sectional shape in an ABS plane comprising a rectangle capped at a trailing edge side by a triangular peak having a base width equal to the width of said rectangle; depositing a non-magnetic layer over said narrow tip, said layer covering said triangular peak and extending laterally and symmetrically to both sides of said narrow tip; using a second etching process, etching said non-magnetic layer to remove that portion covering said triangular peak but leaving a remaining portion abutting both lateral sides of said rectangular portion, said remaining portion sloping downward to form a continuation of said triangular peak and thence extending horizontally laterally and symmetrically; then forming a plasmon generating layer contiguously over exposed trailing edge surfaces of said narrow pole tip and said non-magnetic layer.