12 June 2006 Structural microinhomogeneity of fluorophosphate glasses with small additions of europium
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Proceedings Volume 5946, Optical Materials and Applications; 594603 (2006) https://doi.org/10.1117/12.639057
Event: Optical Materials and Applications, 2005, Tartu, Estonia
Abstract
The structural microinhomogeneity of EuF3 doped fluorophosphate glasses is studied to elucidate the influence of the Eu3+ ion environment on Rayleigh scattering. The measurements of Rayleigh and Mandelstam-Brillouin scattering, small-angle x-ray scattering, y-ray induced optical absorption, and fluorescence are used. It is shown that the introduction of Eu3+ ions into fluorophosphate glass with a small amount of phosphate decreases the Landau-Placzek ratio. Based on the analysis of the optical absorption and x-ray scattering spectra, the grouping of the Eu3+ ions with the phosphate groups is demonstrated. Applying the capture volume model, the maximum concentration of the Eu3+ ions in the phosphate environment is estimated to be 1.05x1018cm-3. It is found that the capture volumes of the Eu3+ located in the phosphate and mixed environment differ by two orders of magnitude, which approves the discussion in terms of the doped ion segregation.
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Tatiana Bocharova, Valeriy Golubkov, Garegin Karapetyan, Alexey Mironov, Natal'ya Tagil'tseva, "Structural microinhomogeneity of fluorophosphate glasses with small additions of europium", Proc. SPIE 5946, Optical Materials and Applications, 594603 (12 June 2006); doi: 10.1117/12.639057; https://doi.org/10.1117/12.639057
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