FT-IR AND RAMAN SPECTROSCOPIC STUDIES OF xAg2O • (100-x)[B2O3 • As2O3] GLASS SYSTEM

Structural analysis of xAg(2)O center dot (100 - x)[B2O3 center dot As2O3] glass system, with 0 <= x <= 10 mol%, was performed by means of FT-IR and Raman spectroscopies. The purpose of this work is to investigate the structural changes that appear in the B2O3 center dot As2O3 glass matrix with the addition and increase of silver ion content. Boroxol rings, pyro-, ortho-, di-, tri-, tetra- and penta-borate groups, structural units characteristic to As2O3 were found in the structure of the studied glasses. FT-IR spectroscopy measurements show that BO3 units are the main structural units of the glass system. The presence of structural units characteristic to Ag2O were not directly evidenced by FT-IR spectroscopy. The Raman analysis leads to similar conclusions as the FT-IR measurements.