Ferroelectric-like hysteresis loop originated from non-ferroelectric effects

Transient Simulation of Ferroelectric Hysteresis

We present a model that allows the analysis of the behavior of ferroelectric materials in a wide range of frequencies. A common approach to the transient properties of dielectrics based on differential equations was extended by an additional term representing the nonlinearity of the material. Our model was designed with respect to a stable discretization. Based on a transient formulation, our m...

Scaling on hysteresis dispersion in ferroelectric systems

The hysteresis area as a function of frequency of the time-varying external electric field—hysteresis dispersion—for ferroelectric Pb~Zr0.52Ti0.48!O3 is measured, and the Monte-Carlo simulation on the hysteresis dispersion for a model ferroelectric lattice is performed too. We demonstrate the scaling behavior of the single-peaked hysteresis dispersion for the two ferroelectric systems, predicti...

A Domain Wall Model for Ferroelectric Hysteresis

This paper summarizes a mathematical model for characterizing hysteresis in ferroelectric materials. The model is based on the quanti cation of energy required to bend and translate domain walls and is developed in two steps. In the rst, the underlying anhysteretic polarization is quanti ed through constitutive equations derived using Boltzmann statistics. Three anhysteretic models are consider...

Ferroelectric effects in PZT

First-principles calculations are performed to investigate alloying and fer-roelectric effects in lead zirconate titanate (PZT) with high Ti composition. We find that the main effect of alloying in the paraelectric phase of PZT is the existence of two sets of B–O bonds, i.e., shorter Ti–O bonds vs. longer Zr–O bonds. On the other hand, ferroelectricity leads to the formation of very short coval...

CONTENTS 3 3 Simulation of Two - Dimensional Ferroelectric Hysteresis