Magneto-optical layer and magneto-optical recording medium

Details Magneto-optical layer and magneto-optical recording medium Magneto-optical layer and magneto-optical recording medium

G - Physics

11

B

G11B 13/04 (2006.01) G11B 11/10 (2006.01) G11B 11/105 (2006.01) H01F 10/16 (2006.01)

Patent

CA 2098950

MAGNETO-OPTICAL LAYER AND MAGNETO-OPTICAL RECORDING MEDIUM ABSTRACT OF THE DISCLOSURE A magneto-optical layer sensitive to a light with a short wavelength such as 400 to 550 nm and having a perpendicular magnetization can be deposited on a substrate at a room temperature. The magneto-optical layer is of a tertiary alloy having a composition CoaPtbRuc where 20 ? a ? 70, 10 ? b ? 70, 10 ? c ? 60 and a + b + c = 100 or CodPteRef where d ? 80, 5 ? e, 5 ? f, 40 ? 4d - 5f and d + e + f = 100, and has an easy magnetization axis perpendicular to the main surface of the layer. The magneto-optical layer may be a quaternary alloy CoPtRuRe hat is a certain combination of the above two tertiary alloys.

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