Low-Temperature Anomaly in Ionic Conductivity of Scandia-Stabilized Zirconia

Abstract

In the 625-740 К temperature range on ceramic composition for 89 mol.% ZrO2 + 10 mol. % Sc2O3 + 1 mol. % CeO2 the jump in ionic conductivity was experimentally detected by a factor of ten with temperature increase. Disconnectedness of indicated anomaly with polymorphic transformation was established by method of X-ray spectral analysis. Discovered effect has the orientation character due to the synchronous ordering of grains for Т ≥ 500 К.</jats:p