Modeling of dynamic ferroelectric hysteresis loops in purified Rb2ZnCl4

Abstract
Dynamic hysteresis loops were recorded in the ferroelectric lock‐in phase of purified Rb2ZnCl4 crystals at a temperature T=188 K which is 5 K below the incommensurate–commensurate phase transition. The hysteresis loops observed in the frequency range 50 Hz<f2ZnCl4. Due to defect interaction, the velocity v of the domain wall depends nonlinearly on the effective force F acting on it and a scaling behavior v∼(FFc)θ with θ=1.45 is observed.