Computationally Efficient Ferroelectric Capacitor Model For Circuit Simulation

A Chaotic Circuit with Ferroelectric Nonlinearity

“…Several approaches, based on the so-called state space model [8], viscoelastic model [9], tanh model [10], and the Preisach model [11] have been proposed. In particular, the prediction capabilities of this last model are accurate only in the quasi-static domain.…”

Two-Dimensional Simulation of Ferroelectric Nonvolatile Memory Cells

“…In order to overcome these difficulties a model was implemented into the device simulator MINIMOS-NT which describes all hysteresis curves by tank functions derived from analytical calculations. The parameters of the locus curves are calculated using the projections of the old directions of the old electric field E 0 id,\\, E 0 id,x and the old polarization field P 0 id,\\, Paid,±-This hysteresis model was chosen in accordance to [5]. To adjust this model to the two-dimensional case the locus curves are not calculated due to the last turning point but to the saturation polarization, so the lancette curves will not exactly fit the-one dimensional hysteresis model.…”

A dynamic ferroelectric capacitance model for circuit simulators

“…The behavior of the nonsaturation loops are taken into account by a factor, so that A⋅P Sat represents that proportion of dipoles that take part in the switching process of the non-saturation loop. This is the well-known model described by Bo Jiang [2].…”

“…This means that the turning points of the voltage curve are of great importance for the dipole distribution [2].…”

“…The Preisach model without switching time delay is implemented in a circuit simulator by storing the voltage turning points [2]. By these turning points the amounts of dipoles in the up-and down-states are unambiguously defined, so that also the course of non-saturation loops can be modeled accurately.…”