Patent ID: 7952827

Claim:
A thin-film magnetic head for a heat-assisted magnetic recording comprising: a heating coil element comprising: a main heating magnetic pole layer for applying a high-frequency magnetic field perpendicular to a surface of a magnetic recording medium, an auxiliary heating magnetic pole layer of which one end is near one end of said main heating magnetic pole layer, and another end is magnetically connected to another end of said main heating magnetic pole layer, and a heating coil layer for generating a magnetic flux in said main heating magnetic pole layer and said auxiliary heating magnetic pole layer and passing through at least between said main heating magnetic pole layer and said auxiliary heating magnetic pole layer; a write head element for writing data signals by generating a signal magnetic field, the write head element being a writing coil element for a perpendicular magnetic recording, and comprising: a main magnetic pole layer for applying a write magnetic field to perpendicular the surface of the magnetic recording medium; an auxiliary magnetic pole layer of which one end is near one end of said main magnetic pole layer, and another end is magnetically connected to another end of said main magnetic pole layer; and a write coil layer for generating a magnetic flux in said main magnetic pole layer and said auxiliary magnetic pole layer and passing through at least between said main magnetic pole layer and said auxiliary magnetic pole layer; and a read head element for reading data signals by sensing the signal magnetic field, wherein said read head element, said heating coil element, and said write head element are stacked in this order from an element-formed surface of a substrate.