Method of optically turning a magneto-optic medium having in ord

Details Method of optically turning a magneto-optic medium having in ord Method of optically turning a magneto-optic medium having in ord

1995-03-30

1998-11-10

Le, N.

Recorders

Magnetographic

Radiation sensitive

G11B 566, G11B 900

Patent

active

058351051

ABSTRACT:
A magneto-optic (MO) recording medium having three MO layers having a combined thickness of about 60-100 nm and having a reflectivity of 18-24%. Two dielectric layers are provided between a substrate and the MO layers. The index of refraction (n) of the dielectric layer nearer the substrate is greater than that of the other dielectric layer. Preferred dielectrics for the two layers include silicon carbide (n.congruent.3) and silicon nitride (n.congruent.2).

REFERENCES:
patent: 4734708 (1988-03-01), Saitoh et al.
patent: 5018119 (1991-05-01), Aratani et al.
patent: 5414678 (1995-05-01), Challenger, IV
patent: 5536570 (1996-07-01), Osato
patent: 5620792 (1997-04-01), Challener, IV
"Multilayered Magneto-Optical Disks for Magnetically Induced Superresolution," Kaneko et al., Jpn. J. Appl. Phys., vol. 31 (1992), pp. 568-575.

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