Patent ID: 7619857
Filing Date: 2009-11-17
Classification: G11B

Abstract:
1. A magnetic disk device comprising: a magnetic disk disposed to rotate; a magnetic head slider disposed so as to be opposed to a surface of the magnetic disk; and a drive unit configured to move the magnetic head slider in a radial direction of the surface of the magnetic disk; wherein an air stream is generated between said magnetic disk that rotates and said magnetic head slider to effect recording or reproduction in a state where said magnetic head slider is floating; wherein said magnetic head slider includes a slider substrate portion and a thin-film head portion that has a metal film recording element or a metal film reproducing element and an insulating film formed on the slider substrate portion and constituting an air-bearing surface along with the slider substrate portion; and wherein the slider substrate portion includes a silicon substrate with a recessed portion in the surface on the side of the thin-film head portion, and a metal member buried in the recessed portion, the metal member disposed on a side of an air flow in end relative to the thin-film head portion and separate from the thin-film head portion.