Theoretical Considerations on the Switching Transient in Ferroelectrics

Calculations are made to find an analytical expression for the switching transient in different ferroelectrics. By studying this expression, it is possible to give a definition of the nucleus-domain interaction and to find a numerical relationship between this interaction and the shape of the switching pulse. An attempt is made to explain the power-law dependence of the switching time on applied field, which was found experimentally in BaTiO₃ (at high fields only), in thiourea, and in other ferroelectrics.