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Electrical and dielectric properties of doped TeO2·PbCl2·PbF2 glasses, prepared in Au or Pt crucibles

M. KUBLIHA1,* , V. TRNOVCOVÁ2, V. LABAŠ1,2, J. PSOTA1, J. PEDLÍKOVÁc3, J. PODOLINČIAKOVÁd4

Affiliation

  1. Faculty of Materials Science and Technology, Slovak University of Technology, SK-917 24 Trnava, Slovakia
  2. Faculty of Education, Catholic University, SK-03401 Ružomberok, Slovakia
  3. Institute of Inorganic Chemistry, Academy of Sciences of Czech Republic, CZ-166 28 Prague, Czech Republic
  4. Department of Physics, Faculty of Natural Sciences, Constantine the Philosopher University, SK-949 74 Nitra, Slovakia

Abstract

Influence of crucibles (Au or Pt) on electrical and dielectric properties of 60TeO2.40PbCl2, and 60TeO2.20PbCl2.20PbF2 glasses, “pure” and doped with 1000 wt-ppm Pr3+ or Er3+, added as metals, chlorides, or oxides, is reported. Among “pure” glasses, the highest conductivity is found in 60TeO2.40PbCl2 glasses prepared in Pt crucibles. The lowest conductivity is found in “pure” 60TeO2.20PbCl2.20PbF2 glasses. Upon doping, the dc conductivity of 60TeO2.40PbCl2 glasses prepared in Pt and Au crucibles decreases or increases, respectively. The dc conductivity of 60TeO2.20PbCl2.20PbF2 glasses increases upon doping. Static relative permittivity of glasses ranges from 27 up to 34. The activation energy of electrical modulus spectrum is the same as the conduction activation energy (0.68-0.97 eV). The TSDC measurements show 3 types of peaks; one of them correlates with the dc conductivity..

Keywords

tellurite/lead chloride/lead fluoride glasses, Pr3+/Er3+ doping, electrical conductivity, TSDC, permittivity, Au, Pt crucibles.

Submitted at: June 2, 2011
Accepted at: Nov. 23, 2011

Citation

M. KUBLIHA, V. TRNOVCOVÁ, V. LABAŠ, J. PSOTA, J. PEDLÍKOVÁc, J. PODOLINČIAKOVÁd, Electrical and dielectric properties of doped TeO2·PbCl2·PbF2 glasses, prepared in Au or Pt crucibles, Journal of Optoelectronics and Advanced Materials Vol. 13, Iss. 11-12, pp. 1493-1497 (2011)