Magnetic head, magnetic disk drive, and method of controlling magnetic head

Patent metadata

Field	Value
Publication number	US-8995079-B2
Application number	US-201314023956-A
Country	US
Kind code	B2
Filing date	Sep 11, 2013
Priority date	Jun 26, 2013
Publication date	Mar 31, 2015
Grant date	Mar 31, 2015

Abstract

According to one embodiment, there is provided a magnetic head including a wave guide, a near field transducer, a writing magnetic pole, a magnetic core, a writing coil, and a first temperature control element. The near field transducer is disposed on an ABS surface and to which light is guided from the wave guide. The writing magnetic pole is disposed on the ABS surface. The magnetic core is 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. The writing coil is disposed so as to go around the magnetic core. The first temperature control element is disposed in contact with a region of a first side surface of the wave guide near the near field transducer.

First claim

What is claimed is:

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 el…

Assignees

• Toshiba Kk

Inventors

• Isokawa Hiroshi
• Taguchi Tomoko

Classifications

• G11B33/144 Primary

  Physics · mapped topic

• G11B5/4866

  Physics · mapped topic

• G11B13/04

  Physics · mapped topic

• G11B2005/0021

  Physics · mapped topic

• G11B5/6088 Primary

  Physics · mapped topic