Spectroscopic and electrical properties of na2so4–bao–p2o5: fe2o3 glass system & role of modifier oxide in emission spectra and kinetics of sm3+ and er3+–ho3+ co-doped na2so4–mo–p2o5 glasses
Spectroscopic and electrical properties of Na2SO4–BaO–P2O5: Fe2O3 glass system & Role of modifier oxide in emission spectra and kinetics of Sm3+ and Er3+–Ho3+ co-doped Na2SO4–MO–P2O5 glasses