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Nanostructured phases in bismuthate glasses containing rare earth ions

E. CULEA1,* , I. BRATU2, M. BOGDAN2, L. GIURGIU2, I. VIDA-SIMITI1, M. CULEA3, L. POP1, M. BOSCA1

Affiliation

  1. echnical University of Cluj-Napoca, Physics Dept., str. C. Daicoviciu, nr.15, 3400 Cluj-Napoca, Romania
  2. National Institute for Research and Development of Isotopic and Molecular Technologies, str. Donath, nr.65 103, 3400 Cluj-Napoca, Romania
  3. Babes-Bolyai University, 400084 Cluj-Napoca, Romania

Abstract

Glasses of the xR2 O3(1-x)(Bi 2 O3 PbO) system where R=Gd, Eu, and Nd and 0 ≤ x ≤ 0.30 were obtained and studied by magnetic susceptibility, X ray diffraction and SEM microscopy. Magnetic susceptibility data that the rare earth magnetic ions show a clusterization tendency even for low concentrations. Over certain limits, the increase of the rare earth oxide content of the samples generate the phase separation process. The crystalline phase evidentiated was the 3BiO-PbO β solid solution (built up of distorted [BiO6] and [PbO6] octahedral units in the body centered cubic crystallographic structure)..

Keywords

Glasses, Structure, Magnetic behavior.

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

Citation

E. CULEA, I. BRATU, M. BOGDAN, L. GIURGIU, I. VIDA-SIMITI, M. CULEA, L. POP, M. BOSCA, Nanostructured phases in bismuthate glasses containing rare earth ions, Journal of Optoelectronics and Advanced Materials Vol. 8, Iss. 3, pp. 1140-1142 (2006)