Distributions of Electric and Elastic Fields at 90° Domain Boundaries in Ferroelectric Thin Layer—Various Configurations

Abstract

In this paper we describe the application of the finite element method (FEM) in modelling spatial distributions of electric and elastic fields in a ferroelectric crystals with three domains separated by a 90° domain walls. There are three various configurations computed. The domain boundary is idealized as a two-dimensional defect in an electro-elastic continuum. It represents the source of inhomogenity and internal distortion in both elastic and electric fields. The main results are distributions of electric field, strain along the domain boundary.