Infrared and Raman spectroscopic investigations of xMnO (100−x)[As2O3 TeO2] glass system

The results offered by FT-IR and Raman spectroscopies suggest a structure formed by AsO3, TeO4 tbp and TeO3 tp units. The presence of MnO2 units was confirmed by FT-IR spectra only for high concentration of MnO.