Opto-magnetic recording medium

Details Opto-magnetic recording medium Opto-magnetic recording medium

1985-03-29

1987-05-12

Lesmes, George F.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428469, 428472, 428694, 428900, G11B 724

Patent

active

046649778

ABSTRACT:
An opto-magnetic recording medium comprises a recording layer formed of a magnetic film having a readily magnetizable axis in a direction perpendicular to the surface of the film, and a reflective and phase modulating layer provided in contact with the recording layer. The reflective and phase modulating layer is formed so that the imaginary number portion (k) of the refractive index gradually increases in the direction of thickness away from that side which is in contact with the recording layer.

REFERENCES:
Monsuripur et al, J. Appl. Physics, 53(6), Jun. 1982, p. 4485, "Signal and Noise in Magneto-Optic Readout".

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