All the spectra of the glasses containing Ti present a shoulder at 814 cm1 that can be due to stretching vibrations of Ti–O–Ti bridges, as observed in the structure of TeO2–LiO2–TiO2 [22] and WO3–TeO2 glass [
All the spectra of the glassescontaining Ti present a shoulder at 814 cm1 that can be due tostretching vibrations of Ti–O–Ti bridges, as observed in the structureof TeO2–LiO2–TiO2 [22] and WO3–TeO2 glass [