Electromechanical Properties of Multi-Domain Ferroelectrics

TL;DR

This paper presents a theoretical study on how the microstructure of domains in ferroelectrics affects their electromechanical properties, emphasizing the role of domain walls and microstructure in response to electric fields.

Contribution

It introduces a continuum model incorporating elastic and electrostatic interactions to simulate the electromechanical behavior of ferroelectric microstructures.

Findings

Electromechanical response depends strongly on domain microstructure.

Domain walls significantly influence piezoelectric properties.

Response varies with electric field direction.

Abstract

We study theoretically the influence of the underlying domain microstructure on the electromechanical properties of ferroelectrics. Our calculations are based on a continuum approach that incorporates the long-range elastic and electrostatic interactions. The theory is used to simulate the piezoelectric properties of a two dimensional model ferroelectric crystal. Simulation results indicate that the electromechanical response of the ferroelectric is strongly dependent on the domain microsctructure, including domain walls. This is particularly true for the case when an electric field is applied along a non-polar direction.