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This article is cited in 4 scientific papers (total in 4 papers)
Semiconductors
Impact of humidity on charge transport in proton-conducting perovskites $A$Zr$_{0.95}$Sc$_{0.05}$O$_{3-\alpha}$ ($A$ = Ca, Sr, Ba) exposed to an oxidative atmosphere
V. B. Balakirevaa, V. P. Gorelova, L. A. Dunyushkinaa, A. V. Kuz'minab a Institute of High-Temperature Electrochemistry, RAS
b Ural Federal University named after the First President of Russia B. N. Yeltsin, Ekaterinburg
Abstract:
The total, bulk, and grain boundary conductivities of proton-conducting zirconates of general formula $A$Zr$_{0.95}$Sc$_{0.05}$O$_{3-\alpha}$ (AZS), where $A$ = Ca, Sr, Ba, are measured in air with different humidity levels. The conductivity is measured using the four-probe dc method (600–900$^{\circ}$C) and impedance spectroscopy (30–800$^{\circ}$C). The impact of humid atmosphere on the total, bulk, and grain boundary conductivities of the AZS system is studied at different humidity levels: (рН$_{2}$О = 0.04, 0.61, and 2.5 kPa. Humidity is found to have a considerable effect on the conductivity of our CaZS and BaZS at lower temperatures, suggesting the likelihood of hydronium ion-mediated transport.
Received: 25.10.2018 Revised: 07.11.2018 Accepted: 07.11.2018
Citation:
V. B. Balakireva, V. P. Gorelov, L. A. Dunyushkina, A. V. Kuz'min, “Impact of humidity on charge transport in proton-conducting perovskites $A$Zr$_{0.95}$Sc$_{0.05}$O$_{3-\alpha}$ ($A$ = Ca, Sr, Ba) exposed to an oxidative atmosphere”, Fizika Tverdogo Tela, 61:4 (2019), 645–651; Phys. Solid State, 61:4 (2019), 515–522
Linking options:
https://www.mathnet.ru/eng/ftt8846 https://www.mathnet.ru/eng/ftt/v61/i4/p645
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