Dynamics of domain walls in ferroelectrics and ferroelastics

Abstract

The motion of domain boundaries in ferroelectrics and related materials is considered. The factors controlling their displacements are indicated: the lattice potential relief, the crystal lattice defects, the long-range electric and elastic fields arising through the bending and the translational displacements of domain boundaries. The motion of domain walls in the presence of these factors is described. The contribution of the domain boundaries to the dielectric and elastic properties of ferroelectrics and ferroelastics is determined for various frequencies of the applied measuring field.