Anomalous switching kinetics in ferroelectric thin (≤ 200 nm) films

Abstract

Abstract It has been established empirically for several years that in several different ferroelectric materials (e.g., PZT, KNO3) the coercive field dependence upon thickness d becomes anomalously large below d = 200 nm, changing abruptly from the exp(−1/3) Kay-Dunn dependence to an unexplained exp(−4/3) dependence. Reasons for this are discussed.