Title: (Hf.sub.1-x Zr.sub.x).sub.3 P.sub.2 O.sub.11 luminescent material, method of preparation and X-ray intensifying screen containing same

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.

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Inventors: Chenot, Charles Frederic (Towanda, PA, US)
Mathers, James Evan (Ulster, PA, US)
Shaffer, Francis Nathan (Towanda, PA, US)

Application Number: 755742
Filing Date: 1976-12-30
Publication_date: 1978-01-10
Assignee: GTE Sylvania Incorporated (Stamford, CT)
Primary Class(es): 250/483.1 252/301.4F, 252/301.4P, 423/305, 423/306, 428/328, 428/690, 428/691, 428/913, 976/DIG439
Other Classes:
US Patent Ref:

2770749	Nov, 1956	Bril et al.	252/301.
3905912	Sep, 1975	Mathers	252/301.
3941715	Mar, 1976	Shidlovsky	252/301.
4014813	Mar, 1977	Shidlovsky	423/305.

Other Refs:
Primary Examiner: Cooper, Jack
Assistant Examiner:
Attorney: Fox; John C.