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BaO-TeO2 glasses containing 10 to 20-mol% BaO were studied by X-ray diffraction, density, thermal analysis, UV–visible and Raman spectroscopy. The effects of Eu3+, Dy3+, Er3+ and Nd3+ on the density, thermal, optical absorption and luminescent properties of barium tellurite glasses were studied. The short-range structure of barium tellurite glasses consists of TeO4 trigonal bipyramidal and TeO3 trigonal...
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