Domain Wall Motion for Slowly Varying Electric Field

Abstract

The problem of domain wall motion near a ferroelectric/dielectric interface is studied using the Landau-Ginzburg-Devonshire three-dimensional phenomenological approach. To account for the effect of the “dead layer”, the generalized boundary conditions are introduced. The small value of the dielectric permittivity in comparison with the ferroelectric one allows us to consider both half-spaces independently. The dependence of 180o domain wall velocity on the applied electric field is investigated. It is assumed that characteristic time and length of the varying external field are significantly greater than the ferroelectric relaxation time and length, respectively. In our investigations the axially symmetric ferroelectric is considered.

Keywords:

• Ferroelectric domain
• domain wall
• dead layer
• electrostatic field
• SPM tip

View correction statement:

Corrigendum: Domain Wall Motion for Slowly Varying Electric Field

Acknowledgments

The authors are grateful to A. K. Tagantsev for numerous useful discussions during the course of the work.