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    STUDIA PHYSICA - Issue no. 2 / 2005  
         
  Article:   STRUCTURAL INVESTIGATION OF Fe2O3 - P2O5-MO (MO  CaO or Li2O) GLASS SYSTEMS BY FTIR SPECTROSCOPY.

Authors:  C. ANDRONACHE, P. PĂŞCUŢĂ, I. ARDELEAN. 		 
       
         
  Abstract:  Glasses from the systems, xFe2O3(100-x)[P2O5MO] (MO  CaO or Li2O) with 0  x  50 mol% were prepared in the same conditions and characterized by IR spectroscopy. It was established the mode in which both Fe2O3 and the replacing of the CaO by the Li2O in these systems influences the local structure of these glasses. The iron ions generally modify in a different way the local structure of these glasses, depending on the presence of the CaO or the Li2O in the glass matrix. The results shown that phosphate units are the main structural units of the glass system and the iron ions are located in the network.  
         
     
         
         
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