Patent ID: 7804743
Filing Date: 2010-09-28
Classification: G11B

Abstract:
1. A head used for thermally assisted magnetic recording apparatus for recording data on a data recording medium by applying a magnetic field and an optical near-field thereto, wherein: said head comprises a substrate with a recessed portion formed therein, the recessed portion having a light-transmitting bottom part; an optical near-field generation device is formed on the surface of the recessed portion facing the data recording medium; a magnetic field generation device is formed on the surface of the recessed portion opposite to the surface having the optical near-field generation device; the optical near-field generation device is a metal element that generates plasmons; and the thickness of the recessed portion in a height direction from the surface facing the data recording medium is not more than the sum of the thickness of a coil of the magnetic field generation device and 1 μm.