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This work presents a comparative study of two phosphate glasses containing both cooper and vanadium oxides in different ratios investigated by
IR spectroscopy. The investigated systems are: x(CuO·V₂O₅) (100-x)[2P₂O₅∙PbO] and x(CuO·2V₂O₅) (100-x)[2P₂O₅∙PbO] with 0 ≤ x ≤ 40 % mol. The purpose of this study is to investigate the influence of vanadium oxide, added in different ratios in the phosphate network. It was observed that the depolymerization process that appears in the case of the glass system with higher vanadium content is significantly stronger than in the other studied system, showing that vanadium oxide has a strong modifier effect in the phosphate network.

 Keywords: Phosphate glasses, vanadium oxide, cooper oxide, FT-IR