On the grain growth of CeO2 nanocrystals in AC/DC electrical fields

Electrical fields can be used to process materials at less demanding conditions, synthesize new phases and compositions. Herein, nanocrystals of CeO2 were synthetized and grown in-situ under AC and DC electrical fields. Main crystallographic properties like crystallite size, morphology texture and grain boundaries were significantly influenced by the electrical field up to 600 °C. Above this temperature, the thermally driven grain growth dominates over the electrical field effect. It leads to a common behavior, isotropic particle shape and surface properties. This shows how electrical and thermal forces compete during grain boundary development.

ALEMAYEHU, A.; ZÁKUTNÁ, D.; WANGLE, T.; RAINER, D.N.; KLEMENTOVÁ, M. et al. On the grain growth of CeO2 nanocrystals in AC/DC electrical fields. Online. Journal of the European Ceramic Society. 2024, roč. 44, č. 5, s. 3456-3463. ISSN 09552219.

Available at: https://doi.org/10.1016/j.jeurceramsoc.2023.12.061.