Interfacial Polarization and Pyroelectricity in Antiferrodistortive Structures Induced by a Flexoelectric Effect and Rotostriction

Abstract

Theoretical analysis based on the Landau-Ginzburg-Devonshire (LGD) theory is used to show that the product effect of flexoelectricity and rotostriction can lead to a spontaneous polarization in the vicinity of antiphase boundaries, ferroelastic twin walls, surfaces and interfaces in the octahedrally tilted phase of otherwise non-ferroelectric perovskites such as CaTiO3, SrTiO3, and EuTiO3. As an example, we numerically demonstrate a large spontaneous polarization on the order of 1-5muC/cm2 at the SrTiO3 antidistortive phase boundaries at temperatures lower than the antiferrodistortive structural phase transition temperature of ~105 K

61 page, 24 figures, 1 table; Extended version including twin domain walls

References in corpus (3)

• Strain gradient induced polarization in SrTiO3 single crystals
• Giant Flexoelectric Effect in Ferroelectric Epitaxial Thin Films
• New Symmetries in Crystals and Handed Structures

Cited by in corpus (39)

• Local Electrostatic Imaging of Striped Domain Order in LaAlO3/SrTiO3
• Nanoscale Phenomena in Oxide Heterostructures
• Flexoelectricity from density-functional perturbation theory
• Does Flexoelectricity Drive Triboelectricity?
• A multiferroic on the brink: uncovering the nuances of strain-induced transitions in BiFeO${}_3$
• Conductivity of twin walls - surface junctions in ferroelastics: interplay of deformation potential, octahedral rotations, improper ferroelectricity and flexoelectric coupling
• Current-density implementation for calculating flexoelectric coefficients
• Macroscopic Polarization from Antiferrodistortive Cycloids in Ferroelastic SrTiO${}_3$
• Universal emergence of spatially-modulated structures induced by flexo-antiferrodistortive coupling in multiferroics
• The influence of elastic strain gradient on the upper limit of flexocoupling strength, spatially-modulated phases and soft phonon dispersion in ferroics
• Surface polar states and pyroelectricity in ferroelastics induced by flexo-roto field
• Flexoelectricity in antiferroelectric ceramics
• Flexocoupling impact on the generalized susceptibility and soft phonon modes in the ordered phase of ferroics
• Direct Observation of Large Flexoelectric Bending at the Nanoscale in Lanthanide Scandates
• New multiferroics based on EuxSr1-xTiO3 nanotubes and nanowires
• Mapping gradient-driven morphological phase transition at the conductive domain walls of strained multiferroic films
• Polarity of domain boundaries in nonpolar materials derived from order parameter and layer group symmetry
• Roto-flexoelectric coupling impact on the phase diagrams and pyroelectricity of thin SrTiO3 films
• Evolution of the SrTiO${}_3$ surface electronic state as a function of LaAlO${}_3$ overlayer thickness
• Low-symmetry monoclinic phase stabilized by oxygen octahedra rotations in thin strained EuxSr1-xTiO3 films
• Flexo-Sensitive Polarization Vortices in Thin Ferroelectric Films
• First-Principles study of vibrational and non-collinear magnetic properties of the perovskite to post-perovskite pressure transition of NaMnF3
• Linear roto-antiferromagnetic effect in multiferroics: physical manifestations
• Rotomagnetic couplings influence on the magnetic properties of antiferrodistortive antiferromagnets
• Hidden Symmetry of Flexoelectric Coupling
• Symmetry and polarity of antiphase boundaries in PbZrO${}_3$
• Flexocoupling impact on the kinetics of polarization reversal
• Phase transition and polar cluster behavior above Curie temperature in ferroelectric BaTi${}_{0.8}$Zr${}_{0.2}$O${}_3$
• Anomalous ferroelectric switching dynamics in single crystalline SrTiO3
• Beyond being free: glassy dynamics of SrTiO${}_3$-based two-dimensional electron gas
• Flexocoupling-induced phonons and ferrons in van der Waals ferroelectrics
• Landau-Ginzburg theory of charge density wave formation accompanying lattice and electronic long-range ordering
• Domain walls in strontium titanate
• Spontaneous symmetry breaking of domain walls in phase-competing regions
• Control of domain states in rhombohedral PZT films via misfit strains and surface charges
• The Influence of Electric Field on the Anisotropic Dispersion of the Flexocoupling Induced Phonons and Ferrons in Van der Waals Ferrielectrics
• Size-dependent piezoelectricity
• Anomalies Of Phase Diagrams And Physical Properties Of Antiferrodistortive Perovskide Oxides
• Intrinsic structural instabilities of domain walls driven by gradient couplings: meandering anferrodistortive-ferroelectric domain walls in BiFeO3