Patent ID: 6544667
Filing Date: 2003-04-08
Classification: G11B,Y10T

Abstract:
A magnetic recording medium having a Co-based alloy magnetic layer possessing a c-axis oriented in-plane, containing Pt and at least one element selected from a group consisting of Ta and B formed on a substrate through an underlayer, characterized in that said underlayer comprises a double layered structure which is formed by stacking a 1st underlayer of Cr-based alloy containing Ti, and a 2nd underlayer of Cr-based alloy containing at least one element selected from a group consisting of Mo and W, in this sequence, wherein the Cr content in said 1st underlayer is 80 at. % and the Ti content in said 1st underlayer is 20 at. %, and the Mo content and the W content in said 2nd underlayer is in the range of 18-20 at. %.