Study on the Structure of Bi_2O_3-Li_2O Glass

The structure of the binary (100-x)Bi2O3 · xLi2O glass was investigated by Raman scattering and X-ray photoelectron spectroscopies. Their O1s binding energies of X-ray photoelec- tron spectroscopy were lower than that of non-bridging oxygen of alkali silicate glass, and it shifted to higher binding energy with increasing Li20 content. The main Raman peak shifted to higher wave number and the Raman bands at lower wave numbers disappeared with increasing Li2O con- tent, which was interpreted that the distortion of network-forming BiOx(x=5 or 6)structural unit was increased with increasing Li2O content.