Magneto-optical recording medium

Details Magneto-optical recording medium Magneto-optical recording medium

G - Physics

11

C

42/2, 352/33.3

G11C 13/06 (2006.01) G11B 11/105 (2006.01)

Patent

CA 2017300

A magneto-optical recording medium has a first magnetic layer laminated on a second magnetic layer, the first magnetic layer, of (Nd, Pr)-transition-metal amorphous alloy systems, having high magneto-optical effect at short wavelengths but low perpendicular anisotropy, and the second magnetic layer, of (Tb, Dy)-transition-metal amorphous alloy systems, having low magneto-optical effect at short wavelengths but low perpendicular anisotropy. By exerting magnetic exchange coupling between these two layers on the said first layer to induce strong perpendicular anisotropy in it, a perpendicular magnetized magneto-optical recording medium is obtained that has overall high magneto-optical effect, even at short wavelengths.

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