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EPR investigation of the xMnO⋅(100-x)[2B2O3⋅MO] (MO → CdO, SrO) glass systems

I. ARDELEAN1, M. FLORA2,*

Affiliation

  1. Faculty of Physics, Babes-Bolyai University, 400084 Cluj-Napoca, Romania
  2. Department of Physics, University of Oradea, 410087 Oradea, Romania

Abstract

Electron paramagnetic resonance (EPR) of Mn2+ ions revealed their distribution on different structural units in 2B2O3⋅CdO or 2B2O3⋅SrO glass matrices doped with of MnO. Disordered octahedral symmetric sites were detected up to 5 mol % MnO. In case of CdO containing glasses the dipolar interactions were detected up to 20 mol% MnO but for SrO containing glasses up to 10 10 mol%. For higher MnO content in both glass systems appear the superexchange magnetic interactions. From these data results that the valence states and intensity of magnetic superexchange interactions are different in these two glass systems..

Keywords

Borate glasses, Local structure, Manganese ions.

Submitted at: Dec. 2, 2005
Accepted at: May 18, 2006

Citation

I. ARDELEAN, M. FLORA, EPR investigation of the xMnO⋅(100-x)[2B2O3⋅MO] (MO → CdO, SrO) glass systems, Journal of Optoelectronics and Advanced Materials Vol. 8, Iss. 3, pp. 1114-1117 (2006)