(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
US4068128A · kind A · utility
23Cited by
4References
13Claims
0Family size
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Key dates
| Filing date | Dec 30, 1976 |
| Grant date | Jan 10, 1978 |
| Priority date | — |
| Expiry date | Dec 30, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/256
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.