Magneto-optic memory medium

Details Magneto-optic memory medium Magneto-optic memory medium

G - Physics

11

B

352/33.3

G11B 11/10 (2006.01) G11B 7/24 (2006.01) G11B 7/243 (2006.01) G11B 11/105 (2006.01)

Patent

CA 1316598

ABSTRACT OF THE DISCLOSURE A magneto-optic memory medium comprising a dielectric film, a magneto-optic memory film, a dielectric film and a reflective film superposed in layers on a light trans- mitting substrate, the magneto-optic memory film being a rare earth-transition metal alloy film having the com- position formula of: (GdxTb1-x)yFe1-y wherein x is 0.58 to 0.62, and y is 0.27 to 0.33, which is useful as a magneto-optic disc or magneto-optic card.

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