“…Modeling of hysteresis in ferroelectric materials has been the subject of abundant literature; several types of models have been used, such as domain wall switching (Arlt, 1996(Arlt, ,1997, electrical models (Nishimoura et al 1997), simple polynomial interpolations (Huang and Tiersten, 1998) and Preisach models (Freeman and Joshi, 1996;). An important work was done by Hughes and Wen (1997).…”