“…Several classes of models for ferroelectric and ferromagnetic materials meet these criteria including homogenized energy models Smith et al, 2003aSmith et al, , b, 2006aSmith, 2005;, Preisach models (Mayergoyz, 1991;Ge and Jouaneh, 1995;Mittal and Meng, 2000;Robert et al, 2000;Webb et al, 2000;Song et al, 2005), and domain wall models (Jiles and Atherton, 1984;Dapino et al, 2000;Massad and Smith, 2003;Smith and Massad, 2003). Moreover, inverse models based on these techniques have been experimentally implemented (Ge and Jouaneh, 1996;Mittal and Meng, 2000;Tan et al, 2001;Nealis and Smith, 2003;Tan and Baras, 2004;Song et al, 2005;Hatch et al, 2006;Nealis and Smith, 2007).…”