CONDUCTIVITY RELAXATION STUDY ON (BI2O3)(1-X)(Y2O3)(X) AND (BI2O3)(1-X)(GD2O3)(X) WITH THE DEFECT FLUORITE STRUCTURE

Authors
TAKAI S KOHNO N ESAKA T
Citation
S. Takai et al., CONDUCTIVITY RELAXATION STUDY ON (BI2O3)(1-X)(Y2O3)(X) AND (BI2O3)(1-X)(GD2O3)(X) WITH THE DEFECT FLUORITE STRUCTURE, Materials research bulletin, 33(6), 1998, pp. 945-953
Citations number
25
Categorie Soggetti
Material Science
Journal title
Materials research bulletin → ACNP
ISSN journal
00255408
Volume
33
Issue
6
Year of publication
1998
Pages
945 - 953
Database
ISI
SICI code
0025-5408(1998)33:6<945:CRSO(A>2.0.ZU;2-R
Abstract
In order to investigate the conductivity phenomena below 400 degrees C in high-temperature-type oxide ion conductors of (Bi2O3)(1-x)(Y2O3)(x ) and (Bi2O3)(1-x)(Gd2O3)(x), impedance spectra were measured in the f requency range between 20 Hz and 1 MHz. The conductivity relaxation ph enomena observed were studied in terms of the electric modulus formula . The relaxation frequencies were found to show Arrhenius-type behavio r and the activation energies were in good agreement with those obtain ed by high temperature electric conductivity. (C) 1998 Elsevier Scienc e Ltd.