Synthesis and Effect of MgSO4 co-doping on the Optical, IR, and Raman Spectroscopic Studies of Eu3+-Doped Alkaline Silica Borate Glasses Produced with SLS Glass as a Silica Source
摘要
Two sets of glasses were prepared by rapid melt quench method in the glass system (Eu2O3)x (Na2O)0.1 (B2O3)0.6 (SLS)0.3-x and (Eu2O3)0.01 (Na2O)0.1 (B2O3)0.6 (SLS)0.29-y (MgSO4)y with x and y = 0, 0.005, 0.01, 0.03, and 0.05 mol% to check the effect of MgSO4 inclusion on the glass properties. XRF analysis confirmed the chemical composition of the SLS glass to be 70.81wt% SiO2. The addition of MgSO4 to NaSBEu glasses lowered the sample’s density due to the lower density of Mg (1.738 g/cm3), whereas Eu has a density of 5.25 g/cm3. Adding MgSO4 to NaSBEu glasses raised the band gap values from 3.85 to 3.90 eV and the indirect band gap from 3.22 to 3.23 eV for NaSBEu0.005. The absorption peaks result from the trigonal BO3 bond's relaxation, which causes asymmetric vibrational stretching of the borate. The primary basis for the network structure of these glass samples is the arrangement of BO3 and BO4 units in various structural groupings. The sharpness of the IR absorption peaks increases with the addition of MgSO4.