Symmetry Breaking and Electrical Frustration during Tip-Induced Polarization Switching in the Nonpolar Cut of Lithium Niobate Single Crystals
Source abstract
Abstract
Polarization switching in ferroelectric materials is governed by a delicate interplay between bulk polarization dynamics and screening processes at surfaces and domain walls. Here we explore the mechanism of tip-induced polarization switching at nonpolar cuts of uniaxial ferroelectrics. In this case, the in-plane component of the polarization vector switches, allowing for detailed observations of the resultant domain morphologies. We observe a surprising variability of resultant domain morphologies stemming from a fundamental instability of the formed charged domain wall and associated electric frustration. In particular, we demonstrate that controlling the vertical tip position allows the polarity of the switching to be controlled. This represents a very unusual form of symmetry breaking where mechanical motion in the vertical direction controls the lateral domain growth. The implication of these studies for ferroelectric devices and domain wall electronics are discussed.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Ferroelectric and Piezoelectric Materials · Photorefractive and Nonlinear Optics · Multiferroics and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Natural Sciences, Ural Federal University, 51 Lenin Avenue, 620000 Ekaterinburg, Russia
Institute of Physics, National Academy of Sciences of Ukraine, 46 pr. Nauky, 03028 Kyiv, Ukraine
Taras Shevchenko Kyiv National University, 4 pr. Akademika Hlushkova, 03022 Kyiv, Ukraine
Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, 3 Krjijanovskogo, 03142 Kyiv, Ukraine
Center for Research in Ceramics and Composite Materials (CICECO) and Department of Materials and Ceramic Engineering, University of Aveiro, Aveiro 3810-193, Portugal
Funding
Oak Ridge National Laboratory · Fundação para a Ciência e a Tecnologia · Russian Foundation for Basic Research · National Academy of Sciences of Ukraine
References (42)
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