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Pressure control of nonferroelastic ferroelectric domains in ▫$ErMnO_3$▫Sandvik, Olav W. ...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 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.Vir: Nano letters. - ISSN 1530-6992 (Vol. 23, iss. 15, Aug. 2023, str. 6994-7000)Vrsta gradiva - e-članek ; neleposlovje za odrasleLeto - 2023Jezik - angleškiCOBISS.SI-ID - 159565315
Avtor
Sandvik, Olav W. |
Müller, Aaron Merlin |
Ånes, Håkon W. |
Rojac, Tadej, 1979- |
Schultheiß, Jan
Teme
topologically protected defects |
piezoresponse force microscopy |
domain engineering |
mechanical pressure |
improper ferroelectrics |
topološke napake |
mikroskop na atomsko silo |
inženiring feroelektričnih domen |
mehanska sila |
feroelektriki
Vnos na polico
Trajna povezava
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Sandvik, Olav W. | |
Müller, Aaron Merlin | |
Ånes, Håkon W. | |
Rojac, Tadej, 1979- | 24272 |
Schultheiß, Jan |
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