Insights into phase formation in fluorochlorozirconate glass-ceramic storage phosphors.
We have studied the effect of oxide impurities on the formation of BaCl{sub 2} nanocrystals in Eu-doped fluorochlorozirconate glass-ceramic storage phosphors using x-ray absorption near-edge structure and x-ray diffraction analyses. It is found that annealing the glass with a relatively high level of oxide impurities causes crystallization of BaCl{sub 2} and a phase transition from hexagonal to orthorhombic BaCl{sub 2}. The latter phase is responsible for the storage phosphor effect. In contrast, the glass with a low impurity concentration forms hexagonal BaCl{sub 2}, but no such phase transition. Our study provides structural clues for understanding the x-ray storage mechanism in fluorozirconate-based glass ceramics.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- SC; NIH
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 953444
- Report Number(s):
- ANL/ET/JA-54929
- Journal Information:
- Appl. Phys. Lett., Journal Name: Appl. Phys. Lett. Journal Issue: 3 ; May 11, 2006 Vol. 88; ISSN APPLAB; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- ENGLISH
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