The Electric Conductivity of Poly- and Singlecrystaline Y2O3 in Oxidative Atmosphere |
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| Authors: | A. I. Kovrova V. P. Gorelov A. V. Kuz’min B. A.-T. Melekh |
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| Affiliation: | 1.Institute of High-Temperature Electrochemistry, Ural Division,Russian Academy of Sciences,Yekaterinburg,Russia;2.Ural Federal University named after the first President of Russia B.N. Yeltsin,Yekaterinburg,Russia;3.Ioffe Physicotechnical Institute,Russian Academy of Sciences,St. Petersburg,Russia |
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| Abstract: | Comparative impedance measurements of electric conductivity of nominally undoped yttria are carried out for samples with sharply differing morphologies, namely, single crystals and porous ceramics (with a density of 67%) over a 980–350°С temperature range in air atmosphere of different humidity (рН2О= 40–3000 Pa). Dilatometric analysis of possible structure changes is carried out. The effects of uncontrolled impurities on the yttria defect structure are analyzed. |
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