Patent ID: 6447936
Filing Date: 2002-09-10
Classification: G11B,H04B,Y10S,Y10T

Abstract:
A perpendicular recording medium, comprising:a substrate; an underlayer formed on said substrate; a first perpendicular magnetization film having a first magnetic anisotropy energy formed on said underlayer; and a first amorphous perpendicular magnetization film having a second magnetic anisotropy energy, formed on said first perpendicular magnetization film, wherein, the second magnetic anisotropy energy of said first amorphous perpendicular magnetization film is greater than the first magnetic anisotropy energy of said first perpendicular magnetization film, and further wherein, a thickness of the first amorphous perpendicular film is less than a thickness of the first perpendicular magnetization film, and a total thickness of said perpendicular magnetization film and the first amorphous perpendicular film is within a range of 7 nm to 100 nm.