Patent ID: 9520146
Filing Date: 2016-12-13
CPC Classification: G11B,H04R,Y10T

Claim Text:
1. A method of forming a wrapped-around shielded perpendicular magnetic recording writer pole, the method comprising: providing a structure comprising a leading shield layer and an intermediate layer disposed over the leading shield layer, the intermediate layer comprising a pole material and a dielectric material; forming a trench in the dielectric material by forming a first patterned mask layer having a first patterned opening over the intermediate layer, and removing a portion of the dielectric material below the first patterned opening, wherein a non-magnetic layer is formed in the trench during formation of the trench, the non-magnetic layer comprising an oxidized portion of a top surface of the leading shield layer; removing the non-magnetic layer in the trench via an ion beam etching process; depositing a seed layer in the trench and over the pole material; and depositing a magnetic material comprising a side shield layer on at least a portion of the seed layer.