Abstract
Multiple diffusion experiments of all stable lanthanides were performed simultaneously in calcia-stabilized zirconia (CSZ) in the temperature range between 1286° and 1463°C. The bulk diffusion coefficient obtained increases with increasing ionic radius. The experimental activation enthalpy is near 6 eV and is not strongly affected by the type of lanthanide. These results were correlated with calculations of the cation diffusion using the Mott-Littleton-approach. An association energy of cation vacancies with oxygen vacancies of about 1 eV was deduced.
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