Ising lines: natural topological defects within chiral ferroelectric domain walls

Abstract

Phase-field simulations demonstrate that the polarization order-parameter field in the Ginzburg-Landau-Devonshire model of rhombohedral ferroelectric BaTiO3 allows for an interesting linear defect, stable under simple periodic boundary conditions. This linear defect, termed here as Ising line, can be described as about 2 nm thick intrinsic paraelectric nanorod acting as a highly mobile borderline between finite portions of Bloch-like domain walls of the opposite helicity. These Ising lines play the role of domain boundaries associated with the Ising-to-Bloch domain wall phase transition.

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References in corpus (7)

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• Ferroelectricity at ferroelectric domain walls
• Unusual polarization patterns in flat epitaxial ferroelectric nanoparticles
• Bichiral structure of feroelectric domain wall driven by flexoelectricity
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Cited by in corpus (4)

• Electric Field Control of Three-Dimensional Vortex States in Core-Shell Ferroelectric Nanoparticles
• Flexo-Elastic Control Factors of Domain Morphology in Core-Shell Ferroelectric Nanoparticles: Soft and Rigid Shells
• Ferroelectric Properties and Topological Polar Textures of PbTiO${}_3$ from a Second-Principles Open-Source Interatomic Potential
• Inhomogeneous Electric Fields for Precise Control and Displacement of Polar Textures