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Analysis of the distribution of Tm3+ ions in LaF3 containing transparent glass-ceramics through X-ray absorption spectroscopy

: Pablos-Martín, A. de; García, M.A.; Muñoz-Noval, A.; Castro, G.R.; Pascual, M.J.; Durán, A.


Journal of non-crystalline solids 384 (2014), pp.83-87
ISSN: 0022-3093
International Symposium on Crystallization in Glasses and Liquids <10, 2012, Goslar>
Journal Article, Conference Paper
Fraunhofer IWM ( IMWS) ()
X-ray absorption spectroscopy; oxyfluoride glass-ceramics; fluoride crystals; rare earth

Incorporation of rare-earth (RE) ions in the fluoride crystals of oxyfluoride glass-ceramics greatly improves the optical properties of these materials, such as the up-conversion emission. In this work, we present a study of this incorporation using X-ray absorption near-edge structure (XANES) spectroscopy and extended X-ray absorption fine structure (EXAFS) spectroscopy. Both techniques allow quantifying the distribution of these ions in the glass matrix and the fluoride crystals. We found that 27% of Tm3 + ions are incorporated in LaF3 nano-crystals.