Pressure Control of Nonferroelastic Ferroelectric Domains in ErMnO₃.

ABSTRACT: Mechanical pressure controls the structural, electric, and magnetic order in solid-state systems, allowing tailoring of their physical properties. A well-established example is ferroelastic ferroelectrics, where the coupling between pressure and the primary symmetry-breaking order parameter enables hysteretic switching of the strain state and ferroelectric domain engineering. Here, we study the pressure-driven response in a nonferroelastic ferroelectric, ErMnO₃, where the classical stress-strain coupling is absent and the domain formation is governed by creation-annihilation processes of topological defects. By annealing ErMnO₃ polycrystals under variable pressures in the MPa regime, we transform nonferroelastic vortex-like domains into stripe-like domains. The width

SUBMITTER: Sandvik OW 

PROVIDER: S-EPMC10416345 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature