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Spectroscopic studies of some silver calcium phosphate glasses

A. O. HULPUS1,* , R. CICEO LUCACEL1, I. ARDELEAN1

Affiliation

  1. Faculty of Physics, Babes Bolyai University, Cluj Napoca, 400084, Romania

Abstract

Phosphate based glasses doped with small quantities of silver oxide have been prepared and studied by means of two spectroscopic methods: FT-IR absorption and Raman scattering. Both techniques provide information regarding the local structure and the molecular dynamics analyzing the transition between the vibrational and vibration-rotational levels. Analysis of the FT-IR and Raman spectra of the investigated glasses reveals a network structure arising mainly from the phosphate structural units: Q3 ([P(OP)3OP-)1]), Q2([P(OP)2OP-)2]), Q1 ([P(OP)OP-)3] and Q0 tetrahedra linked through P-O-P bonds. The occurrence of the de depolimerization process in these phosphate glasses with the addition of silver oxide was followed..

Keywords

Silver-boron-calcium-phosphate glasses, FT-IR, Raman.

Submitted at: Feb. 25, 2008
Accepted at: Feb. 18, 2008

Citation

A. O. HULPUS, R. CICEO LUCACEL, I. ARDELEAN, Spectroscopic studies of some silver calcium phosphate glasses, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 2, pp. 240-242 (2008)