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EPR Study of Some Iron-Lead-Phosphate Glasses

O. COZAR1,* , D. A. MAGDAS1,2, N. VEDEANU1,3, I. ARDELEAN1

Affiliation

  1. Faculty of Physics, Babes-Bolyai University, 400084 Cluj-Napoca, Romania
  2. National Institute for Research and Development of Isotopic and Molecular Technologies, Donath, 71-103, P.O. 700, Ro-400293, Cluj-Napoca, Romania
  3. Faculty of Pharmacy, Department of Physics-Biophysics, “Iuliu Hateganu” University of Medicine and Pharmacy, 400023, Cluj-Napoca, Romania

Abstract

The xFe2O3(1-x)[2P2O5 PbO] glass system with 0.5≤x≤50 mol% was prepared and investigated by means of EPR spectroscopy in order to evidence the structural changes induced by the iron ions in different ratios. The isolated Fe3+ ions are situated in sites of distorted octahedral symmetries (rhombic or tetragonal). The dipolar and superexchange interactions were also revealed among iron ions as a function of Fe2O3 content of the samples..

Keywords

Lead- phosphate glasses, Iron ions, EPR spectroscopy.

Submitted at: Feb. 25, 2008
Accepted at: Dec. 10, 2008

Citation

O. COZAR, D. A. MAGDAS, N. VEDEANU, I. ARDELEAN, EPR Study of Some Iron-Lead-Phosphate Glasses, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 12, pp. 3202-3204 (2008)