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    STUDIA PHYSICA - Issue no. 1 / 2008  
         
  Article:   FT – IR SPECTROSCOPIC STUDY OF XAG2O•(100-X)[3B2O3·AS2O3] GLASS SYSTEM.

Authors:  S.C. BAIDOC, I. ARDELEAN. 		 
       
         
  Abstract:  Structural analysis of xAg2O(100-x)[3B2O3·As2O3] glass system, with 0 ≤ x ≤ 10 mol%, was performed by means of FT – IR spectroscopy. The purpose of this work is to investigate the structural changes that appear in the 3B2O3·As2O3 glass matrix with the addition and increasing of silver ions content. Pyro-, ortho-, di-, tri-, tetra-, penta-borate groups and structural units characteristic to As2O3 were found in the structure of the studied glasses. At small silver oxide content the predominant structural units are those in which boron is three-fold coordinated. For higher silver oxide concentrations (x ≥ 5 mol%) the number of four-fold coordinated boron units is increasing.

Keywords. FT-IR spectroscopy, Structure, Glass systems 		 
         
     
         
         
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