IMF2017

By using a second-order time-dependent Ginzburg–Landau model, we simulate the dynamic polarization hysteresis behavior of a ferroelectric system subjected to a sinusoidal electric field. We examine polarization hysteresis loop structure as a function of field amplitude and field frequency. The relationship between these parameters and hysteresis loop structure is quantified by considering the Fourier transform spectrum of the time series of polarization. This spectrum is used to determine a deforming factor that measures the amplitude- and frequency-dependent distortion of polarization hysteresis loops from ellipticity. Our results indicate that the considered model produces results in agreement with experimental observations.