Patent ID: 8542456
Filing Date: 2013-09-24
Classification: G11B

Abstract:
1. A magnetic head comprising: a medium facing surface that faces a surface of a recording medium; a write head section; a contact sensor that detects contact of the medium facing surface with the surface of the recording medium; and a heat sink adjacent to the contact sensor, wherein: the write head section has a magnetic pole that produces a write magnetic field for writing data on the recording medium; the contact sensor and the heat sink have respective end faces located in the medium facing surface; the contact sensor varies in resistance in response to temperature variations, and is to be energized; and the heat sink includes an intermediate layer made of a nonmagnetic metal material, and two ferromagnetic layers made of a metal-based magnetic material, the two ferromagnetic layers being disposed with the intermediate layer therebetween, and being antiferromagnetically exchange-coupled to each other via the intermediate layer.