Eu3＋-activated B2O3-GeO2-37Gd2O3-3Eu2O3-（15-x）GdF3-xBaF2 （0≤x≤15） scintillating glasses with the density of 6.1-6.3 g/cm3 were synthesized by a melt-quenching method. The substitution of BaF2 for expensive GdF3...Eu3＋-activated B2O3-GeO2-37Gd2O3-3Eu2O3-（15-x）GdF3-xBaF2 （0≤x≤15） scintillating glasses with the density of 6.1-6.3 g/cm3 were synthesized by a melt-quenching method. The substitution of BaF2 for expensive GdF3 in oxyfluoride borogermanate glasses slightly decreased the glass density within 3.0%. Their optical properties were characterized by transmittance, photolumines- cence （excitation and emission）, and X-ray excited luminescence （XEL） spectra in detail. The emission intensity of Eu3＋ ions increased with the elevated x values. The Eu-O covalancey nature and the local environment of Eu3＋ ions were evaluated by Judd-Ofelt results. It was found that the covalency property of Eu-O bond increased with increasing x values.展开更多
基金supported by the National Natural Science Foundation of China(11165010,11465010)Natural Science Foundation of Jiangxi Province(20142BAB202006,20152ACB21017)+2 种基金the Training Program of Young Scientists(Jing Gang Star)in Jiangxi Province(20133BCB23023)the Key Subject of Atomic&Molecular Physics in Jiangxi Province(2011-2015)the Open Fund of Key Laboratory of Transparent Opto-functional Inorganic Materials,SICCAS
文摘Eu3＋-activated B2O3-GeO2-37Gd2O3-3Eu2O3-（15-x）GdF3-xBaF2 （0≤x≤15） scintillating glasses with the density of 6.1-6.3 g/cm3 were synthesized by a melt-quenching method. The substitution of BaF2 for expensive GdF3 in oxyfluoride borogermanate glasses slightly decreased the glass density within 3.0%. Their optical properties were characterized by transmittance, photolumines- cence （excitation and emission）, and X-ray excited luminescence （XEL） spectra in detail. The emission intensity of Eu3＋ ions increased with the elevated x values. The Eu-O covalancey nature and the local environment of Eu3＋ ions were evaluated by Judd-Ofelt results. It was found that the covalency property of Eu-O bond increased with increasing x values.
