Opto-magnetic recording medium

Details Opto-magnetic recording medium Opto-magnetic recording medium

1985-06-28

1987-12-08

Lesmes, George F.

Stock material or miscellaneous articles

Composite

Of metal

428472, 428694, 428698, 428702, 428704, 428900, G11B 724

Patent

active

047118210

ABSTRACT:
An opto-magnetic recording medium comprises a transparent plastic substrate, a magnetic recording layer provided on the plastic substrate, and two or more thin film layers provided between the plastic substrate and the magnetic recording layer and decreasing the reflectance of the magnetic recording layer for a light entering from the substrate side. At least one of the thin film layers except the layer which is in contact with the plastic substrate is formed of Si.sub.3 N.sub.4.

REFERENCES:
patent: 4042341 (1977-08-01), Smeggil
patent: 4414650 (1983-11-01), Ohta et al.
patent: 4525028 (1985-06-01), Dorschner
patent: 4579777 (1986-04-01), Honguu et al.
Takahashi et al., "Magneto-Optic Properties of GdTbFe Thin Films", Nov. 1983, Sharp Corporation.
Katayama et al., "Study of High Reliability of the Magneto-Optic Medium with the Multiplayer Structure", Nov. 1983, Sharp.
Cuomo et al., "Antireflection Coatings for the Enhancement of Magneto-Optic Effects . . . ", IBM TDB, vol. 16, No. 5, Oct. 1973, p. 1442.
Bell et al., "Antireflection Structures for Optical Recording", IEEE 1978 (month unknown).
Keay et al., "Longitudinal Kerr Magneto-Optic Effect in Multilayer Structures of Dielectric and Magnetic Films", Optica Acta 1968, vol 15, No. 4, pp. 373-388.

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