Polarization reversal in congruent and stoichiometric lithium tantalate

Abstract

Switching kinetics has been compared in congruent (CLT) and stoichiometric (SLT) lithium tantalate by simultaneous recording of instantaneous domain patterns and switching current. A mechanism of fast domain kinetics in CLT driven by domain merging was revealed. The important information about the domain kinetics has been obtained by the statistical analysis of current noise in SLT. A model of jerky domain wall motion is proposed.