Patent ID: 7788795

Claim:
A method for manufacturing a magnetic head, comprising: forming a pedestal and a back gap on a return pole of a perpendicular magnetic write head; forming a first alumina layer on the pedestal and the back gap; forming a resist pattern in a coil forming area surrounding the back gap; forming a second alumina layer on the resist pattern and in the front side of the pedestal; exposing the resist pattern by polishing the second alumina layer and the resist pattern at the same time by CMP; replacing the exposed resist pattern by a SiO 2 layer as a coil insulator; forming a resist pattern for forming the coil on the SiO 2 layer; forming coil grooves in the SiO 2 layer by dry etching using the resist pattern for forming the coil as a mask; and forming the coil in the coil grooves.