Polarization Switching in Ferroelectric Thin Films Undergoing First-Order Phase Transitions
Figure 4
Dependence of the switching current on time (in units of ) during the polarization reversal process in the systems undergoing first-order and second-order phase transitions (transition from the first stable state to the second one). The values of dimensionless temperature for the system undergoing a first-order phase transition are (curve 1) and (curve 2). The value of for the system undergoing a second-order phase transition is (curve 3). The number of dipoles is . The initial state corresponds to the ferroelectric state with a nucleus of the second domain of polarization of the opposite polarization orientation (the size of the nucleus is 4 4). The value of the applied electric field is , ,
