Patent ID: 6830807
Filing Date: 2004-12-14
Classification: G11B,Y10T

Abstract:
A magnetic recording medium, comprising:a substrate; an underlayer on said substrate; a first intermediate layer directly on said underlayer; a second intermediate layer directly on said first intermediate layer; and a magnetic layer directly on said second intermediate layer, wherein said first intermediate layer is made of a cobalt based alloy containing chromium equal to or greater than about 7 at % and equal to or smaller than about 28 at % and has a thickness substantially between 1 nm and 5 nm; the saturation magnetic flux density of said first intermediate layer is substantially between 0.4 T and 0.9 T; said second intermediate layer is made of a cobalt based alloy containing chromium equal to or greater than about 29 at % and equal to or smaller than about 45 at %; the saturation magnetic flux density of said second intermediate layer is substantially between 0 T and 0.4 T; and said magnetic layer includes a cobalt based alloy.