Pattern evolution of ferroelectric domain structure in TGS quenched below phase transition point

Abstract

The temporal evolution of the domain structure in TGS (Triglycine sulphate) quenched from the paraelectric phase to the ferroelectric phase has been investigated by means of the liquid crystal method. The sequential photographs obtained were analyzed by the image processing technique. From the spatial correlation functions of the patterns, the correlation is found to depend on the direction, but the dynamical scaling law holds irrespective of the direction. It is clarified by detailed observation of the pattern that the system behaves like the one with a conserved order parameter, though the order parameter in this system is the polarization.

Key Words:

• ferroelectric domain
• TGS
• dynamical scaling