Magnetooptical recording medium

Details Magnetooptical recording medium Magnetooptical recording medium

G - Physics

11

B

352/33.3

G11B 11/10 (2006.01) G11B 11/105 (2006.01)

Patent

CA 1309770

ABSTRACT A magnetooptical recording medium proposed herein comprises a transparent substrate, a first protective film, a magnetooptical recording film and a second protective film, said films being laminated on said substrate in this order, which the recording film is a thin film of an amorphous alloy of the formula: (Pt and/or Pd)y [RExTM1-x]1-y wherein RR is at least one rare earth element selected from the group consisting of Nd, Sm, Pr, Ce, Eu, Gd, Tb, Dy and Ho, TM is at least one transition metal selected from Fe and Co, and x and y are positive numbers satisfying 0.2<x<0.7 and 0.04<y<0.30, respectively, and has an easy axis of magnetization perpendicular to the film face. The magnetooptical recording medium proposed herein is excellent in resistance to oxidation.

585167

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