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SYNTHESIS AND PROPERTIES OF MULTICOMPONENT LEAD FLUOROBORATE GLASSES CONTAINING RARE EARTH IONS

J. Pisarska1, W. A. Pisarski2,*

Affiliation

  1. Silesian University of Technology, Department of Materials Science, Katowice, Poland
  2. University of Silesia, Institute of Materials Science, Katowice, Poland

Abstract

A new multicomponent oxyfluoride glasses in PbO – PbF2 – B2O3 – Al2O3 – WO3 – Ln2O3 system (where Ln = Pr, Nd, Eu, Tm, Er) were prepared. Lead oxide was partially or totally substituted by lead fluoride in oxide matrices, where the weight ratio of the lead to the boron atom is changed from 1:4 to 4:1. However, only several transparent glass samples with the Pb : B ratio from 1 : 2 to 4 : 1 have been obtained. The (PbO+PbF2)/B2O3 compositional dependence on the existence of the borate species was also supported by Raman spectroscopy. The strong peak at about 805 cm-1 due to the totally symmetric vibration identified as trigonal deformation of the boroxol ring has been observed for samples with the Pb : B ratio equal to 1 : 2, whereas coexistence of both BO3 and BO4 units is evident with increasing of total (PbO+PbF2) lead concentration..

Keywords

Oxyfluoride glasses, Rare earth ions, Synthesis, Raman spectroscopy.

Submitted at: May 19, 2005
Accepted at: Sept. 22, 2005

Citation

J. Pisarska, W. A. Pisarski, SYNTHESIS AND PROPERTIES OF MULTICOMPONENT LEAD FLUOROBORATE GLASSES CONTAINING RARE EARTH IONS, Journal of Optoelectronics and Advanced Materials Vol. 7, Iss. 5, pp. 2667-2669 (2005)