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MM: Fachverband Metall- und Materialphysik
MM 18: Poster Session I
MM 18.28: Poster
Montag, 16. März 2020, 18:15–20:00, P4
Investigation of electrostatic and elastic grain interactions in ferroelectric ceramics using the self-consistent mesoscopic switching model — •Ruben Khachaturyan1, Anna Grünebohm1, and Yuri Genenko2 — 1Interdisciplinary Center for Advanced Materials Simulation, Ruhr-Universität Bochum — 2Institute of Materials Science, Technische Universität Darmstadt
The self-consistent mesoscopic switching model simulates polarization kinetics of polycrystalline ferroelectrics taking into account electrostatic interactions [1]. The model is now improved to take into account elastic interactions between grains. This improvement allows for polarization and strain kinetics description taking into account local strains and electric fields. Having a switching barrier as one of the input parameters the model promises to become a bridge between polycrystalline materials and atomistic simulations.
[1] Correlated polarization-switching kinetics in bulk polycrystalline ferroelectrics. 2: Impact of crystalline phase symmetries, R. Khachaturyan, Y.A. Genenko,Physical Review B., 98(13), 134106, (2018)