Anion transfer in ZrO2 and HfO2 bicrystals containing 12 mol % Y2O3 |
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Authors: | N I Sorokin |
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Institution: | (1) Shubnikov Institute of Crystallography, Russian Academy of Sciences, Leninskii pr. 59, 117333 Moscow, Russia |
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Abstract: | The oxygen-ionic conduction in the YSZ|YSZ and YSZ|YSH bicrystals, where YSZ and YSH are single-crystalline solid solutions
of, respectively, ZrO2 and HfO2 with 12 mol % Y2O3 are studied using the impedance method. Bicrystals consist of two single crystals separated by a common intercrystalline
boundary. The direction of the applied electrical field is chosen perpendicular to the intercrystalline boundary. The oxygen-ion
transfer in the bicrystals is determined primarily by the transport processes in the bulk single crystals. This is associated
with a fast exchange by oxygen vacancies between single crystals at the intercrystalline boundary. |
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Keywords: | |
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