摘要
Raman, IR spectra, RDF and visible spectrum were used to study the glass structure and the valence states of niobium ions in P_2O_5-Nb_2O_5-Li_2O noncrystalling system. The colour-changing mechanism was studied. For 10Nb_2O_5xP_2O_5(90-x)Li_2O (x=40,45,50,55) system glasses, it was known that the glass colout changing from light gold-yellow to blue with increasing is aroused by the Nb^(3+) ion increasing, not by the change of niobium ion coordination.
Raman, IR spectra, RDF and visible spectrum were used to study the glass structure and the valence states of niobium ions in P_2O_5-Nb_2O_5-Li_2O noncrystalling system. The colour-changing mechanism was studied. For 10Nb_2O_5xP_2O_5(90-x)Li_2O (x=40,45,50,55) system glasses, it was known that the glass colout changing from light gold-yellow to blue with increasing is aroused by the Nb^(3+) ion increasing, not by the change of niobium ion coordination.
