Static structures and dynamic responses of polar topologies in oxide superlattices

نویسندگان

چکیده

Polar topologies in ferroelectric/paraelectric superlattices have been an important substance to explore exotic physical properties. Although enormous efforts paid this field, the universality of formation polar various and their electric field dynamics is still unknown. Herein, we employ a phase-field model construct three types with tetragonal, rhombohedral, orthorhombic symmetries investigate static structures dynamic responses as function epitaxial strain. It found that all undergo similar vortex–spiral–in-plane topology transition, which corresponds peaked dielectric permittivity curves ferroelectric-, antiferroelectric-, paraelectric-like hysteresis loops. Such polarization behaviors are attributed triple-well free energy landscape. The flexibility loops generates high density efficiency superlattices. This study offers systematic view generality multilayered ferroelectrics.

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ژورنال

عنوان ژورنال: Applied Physics Letters

سال: 2022

ISSN: ['1520-8842', '0003-6951', '1077-3118']

DOI: https://doi.org/10.1063/5.0124729