Non-crystalline substance having an optical memory effect

Details Non-crystalline substance having an optical memory effect Non-crystalline substance having an optical memory effect

1975-04-08

1977-08-16

Padgett, Benjamin R.

Compositions

Inorganic luminescent compositions

Tungsten containing

252501, 340173CC, 350160P, G11B 700

Patent

active

040425266

ABSTRACT:
A non-crystalline substance for use in an optical memory device which consists of an As-Se system non-crystalline material and the additional third component(s) Zn, Au, or Ag and/or Cu. The substance is characterized by its transmission ability in the visible region as well as in the I.R. region and its extreme reduction of transmittance upon irradiation with, e.g., a laser beam.

REFERENCES:
patent: 3720921 (1973-03-01), Schools et al.
Renault, S., "Electrical . . . System" Vesres Refract 1 1972 (2663) pp. 88-93 as abstracted in Chem. Abs. vol. 78, No. 63751b.
Asahara et al. "Switching . . . Glasses" Japan J. Appl. Phys. 11 (1972) pp. 109-110.
Kolomiets et al. "Effect . . . Selenide" J. Non-Cryst. Solids 1971, 5(5) pp. 389-401 as abstracted in Chem. Abs. 74:92392h.

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