Ferroelectric 180 degrees Domain Wall Motion Controlled by Biaxial Strain

摘要

180 degrees domain wall motion in a tetragonal ferroelectric oxide is accelerated by an order of magnitude using in situ strain in a force microscope. Single-domain PbZr0.2Ti0.8O3 films on piezoelectric (001)-oriented 0.72PbMg(1/3)Nb(2/3)O(3)-0.28PbTiO(3) substrates allow for direct investigation of strain-dependent domain dynamics. The strain effect depends on the sign of applied field through strain-dependent electrode built-in potentials and a suggested charging of tilted walls.