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A spectroscopic comparison of samarium-doped LiYF4 and KY3F10

Wells, Jon-Paul R. and Sugiyama, Akira and Han, Thomas P.J. and Gallagher, Hugh G. (2000) A spectroscopic comparison of samarium-doped LiYF4 and KY3F10. Journal of Luminescence, 87-89. pp. 1029-1031. ISSN 0022-2313

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Abstract

Laser selective excitation and fluorescence has been performed on LiYF4 and KY3F10 doped with samarium ions. In LiYF4, a single, tetragonal symmetry center associated with isovalent substitution of Sm3+ with lattice yttrium ions is present. By contrast, three Sm2+ centres and a single, tetragonal symmetry Sm3+ center are detected in KY3F10. This complex defect distribution is tentatively explained by the existence of charge-compensating F- vacancies.