Patent ID: 8064163

Claim:
A perpendicular magnetic write head comprising: a thin film coil generating a magnetic flux; a main magnetic pole layer extending backward from an air bearing surface facing onto a recording medium and leading the magnetic flux generated in the thin film coil to the recording medium; a gap layer extending backward from the air bearing surface on a trailing side of the main magnetic pole layer; an auxiliary magnetic pole layer extending backward from a position recessed from the air bearing surface on the trailing side of the main magnetic pole layer; a return yoke layer extending backward from the air bearing surface on a trailing side of the gap layer and the auxiliary magnetic pole layer, and being coupled to the auxiliary magnetic pole layer on a side away from the air bearing surface; and a write shield layer disposed on a side close to the air bearing surface between the gap layer and the return yoke layer; wherein the auxiliary magnetic pole layer is partially overlapped on the gap layer in a region between the write shield layer and a connection part of the auxiliary magnetic pole layer and the return yoke layer, and the auxiliary magnetic layer is partially connected to the main magnetic pole, a rear edge of the gap layer is disposed in the region between the write shield layer and the connection part of the auxiliary magnetic pole layer and the return yoke layer, and recessed from a front edge of the auxiliary magnetic pole layer, and the front edge of the auxiliary magnetic pole layer is disposed in the region between the write shield layer and the connection part of the auxiliary magnetic pole layer and the return yoke layer, and recessed from a rear edge of the write shield layer.