X-ray diffraction, calorimetric, and spectroscopic studies of lithium borate glass activated with various oxide admixtures based on europium

Abstract

Lithium borate glass activated with europium oxide, europium borate, and europium molybdate has been obtained by melt quenching. It has been found that by excitation with UV light of λ_ex = 365 nm, the highest luminescence intensity is observed in the samples activated with europium molybdate. The extreme europium molybdate concentration at which a sharp drop in the glass optical quality starts is measured. The thermal regions of stability are determined and the thermophysical characteristics (jumps of the thermal capacity in the glass-transition point and thermal effects of crystallization) for lithium borate glass doped with various oxides based on europium are calculated.