Some specific features of hot-pressed ferroelectric piezoelectric ceramics

Fesenko, E. G.; Prokopalo, O. I.; Raevski, I. P.; Resnitchenko, L. A.; Панич, А. Е.

doi:10.1080/00150198208210615

Cited by 2 publications

(1 citation statement)

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“…Importantly, our data shows that the grain size is independent of the applied pressure, discarding mechanically induced microstructural creep and the resulting grain-size effects as the origin of variations in the domain structure. 32 Thus, going beyond previous grain-size-dependent studies, 27 this sample series with grains of a single average size represents an ideal system for the investigation of pressure-driven phenomena.…”

Section: ■ Control Of Domain Size and Orientationmentioning

confidence: 95%

Pressure Control of Nonferroelastic Ferroelectric Domains in ErMnO₃

Müller

Ånes

et al. 2023

Nano Lett.

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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, ErMnO 3 , where the classical stress−strain coupling is absent and the domain formation is governed by creation− annihilation processes of topological defects. By annealing ErMnO 3 polycrystals under variable pressures in the MPa regime, we transform nonferroelastic vortex-like domains into stripe-like domains. The width of the stripe-like domains is determined by the applied pressure as we confirm by three-dimensional phase field simulations, showing that pressure leads to oriented layer-like periodic domains. Our work demonstrates the possibility to utilize mechanical pressure for domain engineering in nonferroelastic ferroelectrics, providing a lever to control their dielectric and piezoelectric responses.

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Section: ■ Control Of Domain Size and Orientationmentioning

confidence: 95%