Domain structure investigations of triglycine sulfo-phosphate single crystal: Evidence of domain motion with time at room temperature

Ferroelectric domain dynamics of triglycine sulfo-phosphate (TGSP) single crystals have been studied by atomic force microscopy (AFM). Lenticular domains have been observed on a cleaved (010) surface at room temperature. Time evolution of surface topography with domain motion has been studied systematically for the first time. Due to spontaneous movement of the domain boundary, there is a removal of the top most layer SO4-G1. Consequently the second top layer (G2-G3) is exposed. Additionally, continuous variations in the refraction of cleavage layers at the domain boundary are documented.