MAGNETIC AND STRUCTURAL BEHAVIOUR OF EUROPIUM IONS IN OXIDE VITREOUS SYSTEMS

Lidia Pop, Tania Ristoiu, E. Culea

Department of Physics, Technical University of Cluj-Napoca, Romania

Glasses of the xEu2O3(1-x)(3Bi2O3PbO) system with x=0-0.25 were prepared and studied using electron paramagnetic rezonance (EPR) and magnetic susceptibility measurements. The magnetic measurements evidenced the presence of both Eu2+ and Eu3+ ions, with their relative content depending on the Eu2O3 concentration. Information concerning the structural units involving europium ions and the type of the interactions between these ions were discussed.