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Domain wall dynamics in BaTiO3 revisited

Anna Grünebohm, Ruhr-Universität Bochum, Bochum, Germany

Time & Place
  • Date: 23.04.2022
  • Time:
  • Place: Ferroelectric Domains and Domain Walls, The Northern Lights Edition, Hurtigruten, Norway

Abstract

We revisit the field-induced domain wall motion in (Sr,Ba)TiO3 with atomistic simulations and show how fast field changes may boost the wall velocity and how inhomogeneities may act as pinning centers [2].In the orthorhombic phase, local non-180 switching of dipoles on the traveling walls results in transient local Bloch type walls and dipole vortices.

References:
[1] R. Khachaturyan et al., Phys. Stat. Solidi RRL 16, 2200038 (2022).
[2] A. Dimou et al., Phys. Rev. B 106, 094104 (2022).

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