Electronic polarizability and crystallization of K2O-TiO2-GeO2 glasses with high TiO2 contents

Raman scattering spectra at room temperature for A: 60KTG glass, B: crystallized (644 °C, 3 h) sample of KTG glass, and C: K2TiGe3O9 crystalline phase prepared by a solid state reaction. 60KTG: 20K2O-20TiO2-60GeO2.