A 2D ferroelectric vortex pattern in twisted BaTiO₃ freestanding layers.

ABSTRACT: The wealth of complex polar topologies^1-10 recently found in nanoscale ferroelectrics results from a delicate balance between the intrinsic tendency of the materials to develop a homogeneous polarization and the electric and mechanical boundary conditions imposed on them. Ferroelectric-dielectric interfaces are model systems in which polarization curling originates from open circuit-like electric boundary conditions, to avoid the build-up of polarization charges through the formation of flux-closure^11-14 domains that evolve into vortex-like structures at the nanoscale^15-17 level. Although ferroelectricity is known to couple strongly with strain (both homogeneous¹⁸ and inhomogeneous^19,20), the effect of mechanical constraints²¹

SUBMITTER: Sanchez-Santolino G 

PROVIDER: S-EPMC10866709 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature