The researchers of the department K5, Asst. Prof. Mojca Otoničar, Asst. Prof. Mirela Dragomir and Prof. Tadej Rojac, have published a feature article in the Journal of the American Ceramic Society (JACerS) titled “Dynamics of domain walls in ferroelectrics and relaxors.” The article presents the most important advances in the field of piezoelectric ceramics, focusing on the diverse and complex contributions of domain walls to the macroscopic functional properties of polycrystalline ceramics. Using nonlinear piezoelectric measurements supported by multiscale structural analysis, the authors show how local electrical conductivity in BiFeO3 and the structural disorder inherent to PMN-PT affect DW dynamics and lead to new macroscopic effects. This feature article provides evidence for analytical approaches to identify the key microscopic mechanisms that contribute to the macroscopic functional properties of ferroelectric and related materials.
The authors also designed the cover of this issue of JACerS.