Patent ID: 7948710

Claim:
A thin-film magnetic head formed on an element forming surface of a substrate comprising: a waveguide for leading a light for heat-assist to a magnetic recording medium; and a write head element formed on a trailing side of the waveguide and having a magnetic pole for applying a write magnetic field to the magnetic recording medium, wherein a write magnetic field profile has a projecting region on a leading side, where the write magnetic field profile is a intensity distribution of the write magnetic field from the magnetic pole along a track in a recoding layer of the magnetic recoding medium, and an anisotropy field profile traverses the projecting region of the write magnetic field profile, where the anisotropy field profile is a distribution of an anisotropy field along the track when the anisotropy field is reduced by irradiating the light from the waveguide on a part of the recoding layer.