Modeling and Characterization of Polarization Switching for Ferroelectric HZO Considering Domain Propagation Effect

This work comprehensively models and characterizes the polarization switching of ferroelectric (FE) HZO considering the domain propagation effect. We first present a SPICE framework that can solve the time-dependent Ginzburg–Landau (TDGL) equation, based on which the domain propagation effect through multidomain interaction can be examined. Furthermore, we incorporate the domain propagation effect into an NLS-based model for polycrystalline FE HZO. We have also experimentally characterized the polarization switching of FE HZO from 300 down to 80 K. Our results indicate that the domain propagation effect plays a nonnegligible role for the switching of FE HZO under the temperature of 80 K, and our model is capable of capturing the distinct polarization-switching characteristics due to domain propagation.