Flexoelectricity induced spatially modulated phases in ferroics and liquid crystals (Author review)

Abstract

In the review we briefly analyze the state-of-art in the theory of flexoelectric phenomena and analyze how significantly the flexoelectric coupling can change the polar order parameter distribution in different ferroics and liquid crystals. The special attention in paid to the appearance of the spatially modulated phases induced by the flexocoupling in condensed and soft matter. Results of theoretical modeling performed in the framework of the Landau-Ginzburg-Devonshire formalism revealed that the general feature, inherent to both ferroics and liquid crystals, is the appearance of the spatially-modulated phases is taking place with increasing of the flexocoupling strength. We'd like to underline that theoretical and experimental study of flexoelectricity and related phenomena in nanosized and bulk ferroics, liquid crystals and related materials are very important for their advanced applications in nanoelectronics, memory devices and LC displays.

arXiv comment24 pages, 6 figures

References in corpus (13)

• Atomistic determination of flexoelectric properties of crystalline dielectrics
• First-principles theory of frozen-ion flexoelectricity
• Flexoelectricity from density-functional perturbation theory
• Understanding the origins of the intrinsic dead-layer effect in nanocapacitors
• Antiferrodistortive phase transition in EuTiO3
• Room temperature surface piezoelectricity in SrTiO3 ceramics via piezoresponse force microscopy
• Dynamic flexoelectric effect in perovskites from first principles calculations
• Emergence of a Dynamic Super-Structural Order Integrating Antiferroelectric and Antiferrodistortive Competing Instabilities in EuTiO3
• Correlation Between Structure And C-Afm Contrast Of 180-Degree Domain Walls In Rhombohedral Bati03
• 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
• Lattice dynamics and antiferroelectricity in PbZrO${}_3$ tested by X-ray and Brillouin light scattering
• Flexocoupling impact on the generalized susceptibility and soft phonon modes in the ordered phase of ferroics