(Hf.sub.1-x Zr.sub.x).sub.3 P.sub.2 O.sub.11 luminescent materia

Details (Hf.sub.1-x Zr.sub.x).sub.3 P.sub.2 O.sub.11 luminescent materia (Hf.sub.1-x Zr.sub.x).sub.3 P.sub.2 O.sub.11 luminescent materia

1976-12-30

1978-01-10

Cooper, Jack

Radiant energy

Invisible radiation responsive nonelectric signalling

Luminescent device

2523014P, 2523014F, 423305, 423306, 428328, 428539, 428913, C09K 1142

Patent

active

040681289

ABSTRACT:
An oxide composition of 3:1 (Hf.sub.1-x Zr.sub.x)O.sub.2 :P.sub.2 O.sub.5, and having the empirical formula (Hf.sub.1-x Zr.sub.x).sub.3 P.sub.2 O.sub.11, where x is in the range of about 0 to 0.5, is an effective luminescent material for use in x-ray intensifying screens, and also an effective luminescent material host for Eu.sup.+2 blue emmissions. The luminescent material is obtained in essentially single crystalline large particles when prepared in the presence of a magnesium fluoride flux.

REFERENCES:
patent: 2770749 (1956-11-01), Bril et al.
patent: 3905912 (1975-09-01), Mathers
patent: 3941715 (1976-03-01), Shidlovsky
patent: 4014813 (1977-03-01), Shidlovsky

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