Patent ID: 7181828

Claim:
A method for manufacturing a perpendicular magnetic recording head, comprising the following steps of: (a) forming a main magnetic pole layer from a magnetic material; (b) providing a first nonmagnetic layer on sides and a top surface of the main magnetic pole layer; (c) polishing a top surface of the first nonmagnetic layer to form a planarized surface; (d) trimming the top surfaces of the main magnetic pole layer and the first nonmagnetic layer by dry etching to form a groove defined by inner side surfaces of the first nonmagnetic layer and the top surface of the main magnetic pole layer; (e) depositing a nonmagnetic material layer on the first nonmagnetic layer and the main magnetic pole layer to form a recess of the nonmagnetic material layer on the groove; and (f) forming an auxiliary magnetic pole layer on the nonmagnetic material layer to form a projection in the recess, the projection being integrated with the auxiliary magnetic pole layer and extending toward the main magnetic pole layer.