Abstract
A scenario of ferroelectric domain formation in BaTiO3 is proposed based on our previous observation of temperature evolution of polarization clusters in paraelectric phase, ferroelectric domains, and relaxation dynamics of the polarizations. How the temporal polarization clusters observed at high temperature phase corrugate into static polarization domains in ferroelectric phase is discussed. Temporal polarization clusters turn out to static ones at 4.5˚C above Currie temperature due to a kind of critical slowing down which take place in polarization clusters. Static polarization clusters work like as super paraelectric dipole moments and dipole interaction among static polarization clusters increase according as power low when the temperature decrease toward Currie temperature. These static polarization clusters order at Currie temperature due to a mean field working among them. Bunches of ordered static polarization clusters evolve into relevant complete ferroelectric domains 6˚C bellow the Currie temperature.
