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The structural changes induced by the addition of MoO3 and Fe2O3 in lead-phosphate glasses

D. A. MAGDAS1,* , O. COZAR1, I. ARDELEAN1, V. IONCU1

Affiliation

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

Abstract

The relationship between the composition and structure of x(MoO3٠Fe2O3)(1-x)[2P2O5٠PbO] with 0≤x≤50 mol% glass system has been investigated by FT-IR and Raman spectroscopy. With the increasing of modifier oxide content, the shapes of the IR and Raman bands change due to the replacement of the P-O-P bonds for the most moisture resistant Fe-O-P bonds and also, due to the appearance of the Mo-O-Mo asymmetric stretching vibrations in [MoO4] tetrahedron. The very strong depolymerization which appears in these glasses is observed by decreasing in intensity of the specific bands of phosphate network and by increasing of the characteristic bands of the very short chain phosphate units Q0 and Q1..

Keywords

Lead-phosphate glass, MoO3 addition, Fe2O3 addition, FT-IR spectroscopy, Raman spectroscopy.

Submitted at: Nov. 2, 2006
Accepted at: April 15, 2007

Citation

D. A. MAGDAS, O. COZAR, I. ARDELEAN, V. IONCU, The structural changes induced by the addition of MoO3 and Fe2O3 in lead-phosphate glasses, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 4, pp. 822-824 (2007)