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The structure of the xAg 2 O(100−x)[50P 2 O 5 ·30CaO·20Na 2 O] glasses, with x=0, 3 and 5mol%, was investigated by means of Raman and infrared spectroscopy. The structural changes induced by the Ag 2 O presence into the soda-calcium–phosphate matrix were evidenced and discussed in terms of the network depolymerization process and distortion of the PO 4 ...
New types of composite materials belonging to the (100−x) [50P 2 O 5 ·30CaO·20Na 2 O]xAg 2 O glasses system with 0⩽x⩽0.25 are obtained. Their local structure is analyzed with the help of Raman and infrared spectroscopy and it was found that the glasses structure is built up from predominantly ionic phosphate units. UV–VIS absorption measurements performed on the samples...
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