Ferroelectric Domain Pattern Evolution in Quenched Triglycine Sulphate

Time evolution of domain patterns in a quenched ferroelectric triglycine sulphate (TGS) crystal is investigated in real time and in real space. The effect of applying an electric field after quenching is studied. The characteristic length, defined as a mean domain width, is found to obey the power law with respect to time. From the experimentally obtained time dependence of the area fraction of the domains with positive and negative polarization, it is found that this system behaves like one with a conserved order parameter in the studied time scale, though the order parameter in TGS is the polarization. For the system, to which the electric field is applied, it is found that the dynamical scaling law holds for the domain size distribution function.