An Optimized SPICE-Compatible Positive Feedback Model for Ferroelectric Devices: Design, Calibration, and Dynamic Simulations

In this work, we present and make openly available an optimized SPICE-compatible Landau-Khalatnikov (L-K) equivalent ferroelectric model. The proposed model maps L-K equations to a positive feedback (PF) loop, providing an intuitive and efficient pathway for direct implementation in SPICE, enabling direct integration with other circuital components within circuit simulations. Furthermore, the model parameters are directly mapped to experimentally accessible values, enabling a straightforward calibration of the static and dynamic behavior. Using the model on SPICE simulations, we can accurately replicate and provide insights of complex system interaction phenomena such as the dynamics of ferroelectric oscillators.