Patent ID: 8995079
Filing Date: 2015-03-31
Classification: G11B

Abstract:
1. A magnetic head comprising: a wave guide; a near field transducer disposed on an ABS surface and to which light is guided from the wave guide; a writing magnetic pole disposed on the ABS surface; a magnetic core connected to the writing magnetic pole so as to generate a magnetic field from a portion of the writing magnetic pole close to the ABS surface; a writing coil disposed so as to go around the magnetic core; and a first temperature control element disposed in contact with a region of a first side surface of the wave guide near the near field transducer, wherein the first temperature control element comprises a first electrode disposed in contact with the first side surface of the wave guide, a second electrode disposed in contact with the first side surface of the wave guide so as to be separated from the first electrode, a third electrode disposed on a side of the first and second electrodes, a first semiconductor of a first conductivity type and disposed between the first and third electrodes, a second semiconductor of a second conductivity type and disposed between the second and third electrodes, and a first wiring allowing current to flow between the first and second electrodes.