Magnetic recording head configured to reduce the degradation of recorded signals and disk device including the same

摘要

A magnetic recording head includes a main magnetic pole generating a recording magnetic field, a trailing shield, a recording coil generating a magnetic field and a high frequency oscillator. The trailing shield includes a magnetic region including a gap side end surface facing a write gap and a nonmagnetic film arranged in the vicinity of the write gap in the trailing shield, and within a plane including track width direction centers of the main magnetic pole and the high frequency oscillator and being perpendicular to a recording layer of a recording medium, a film thickness of the nonmagnetic film along a track moving direction is substantially equivalent to or more than a half of a distance from the gap side end surface to the nonmagnetic film.

主权项

1. A magnetic recording head, comprising:
a main magnetic pole that generates a recording magnetic field in a direction perpendicular to a recording layer of a recording medium; a trailing shield disposed on a trailing side of the main magnetic pole with a write gap interposed therebetween; and a high frequency oscillator that is provided between the main magnetic pole and the trailing shield in the write gap, wherein the trailing shield has a non-magnetic part and a magnetic part that is between the non-magnetic part and the oscillator that borders the write gap within a plane including track width direction centers of the main magnetic pole and the high frequency oscillator and being perpendicular to the recording layer of the recording medium, a film thickness of the non-magnetic part along a track moving direction is substantially equivalent to or more than a half of a distance from the gap side end surface to the non-magnetic part.