Origin of Jump-Like Dynamics of the Plane Domain Wall in Ferroelectrics

Abstract

In this paper, we demonstrate how the experimentally observed nonmonotonic sideways motion of the plane domain wall in uniaxial ferroelectric, caused by the electric circuit feedback, can be described theoretically on the basis of the kinetic approach. We demonstrated experimentally the appearance of self-sustained periodic oscillations of the domain wall velocity and compared the theoretical results with the experimental data for switching in model ferroelectric stoichiometric lithium tantalate (LiTaO₃) produced by vapor transport equilibration (VTE-LT). Quasiperiodic and chaotic regimes of wall motion are predicted to be observed experimentally.

Keywords:

• Sideways wall motion
• kinetic approach
• retardation of screening
• nonlinear oscillator
• lithium tantalate
• quasiperiodic oscillations of wall velocity