Ferroelectric Polarization Reversal in Rochelle Salt

An experimental investigation of the polarization reversal process in Rochelle salt shows that besides the slow, lateral motion of b- and c-domain walls, there is also a fast reversal process characteristic of the nucleation and wall propagation in the orthorhombic a-direction. Reversal in this direction is qualitatively analogous to the polarization process in c-domain BaTiO₃.