"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

FT – IR and Raman spectroscopic studies of xAg2O·(100-x)[3B2O3·As2O3] glass system

S. C. BAIDOC1, I. ARDELEAN1,*

Affiliation

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

Abstract

Structural analysis of xAg2O(100-x)[3B2O3·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 3B2O3·As2O3 glass matrix with the addition and increasing of silver ions content. Boroxol rings, pyro-, ortho-, di- , tri-, tetraand 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. The changes in the Ar = A4/A3 (A4 and A3 reflect the relative amount of tetrahedral (BO4 and B - Ø4 ) and triangular (BØ3 and BØ2O-) borate species) ratio also shows the fact that silver oxide influence the boron coordination number. The Raman analysis leads to similar conclusions as FT – IR measurements..

Keywords

B2O3-As2O3-Ag2O glasses, FT-IR, Raman spectroscopy.

Submitted at: Nov. 1, 2008
Accepted at: Dec. 10, 2008

Citation

S. C. BAIDOC, I. ARDELEAN, FT – IR and Raman spectroscopic studies of xAg2O·(100-x)[3B2O3·As2O3] glass system, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 12, pp. 3205-3208 (2008)