The Effects of a Non-Ferroelectric Slab on the Polarization and the Susceptibility of the Ferroelectric Multilayer

TL;DR

This paper investigates how a non-ferroelectric slab affects the polarization and susceptibility of ferroelectric multilayers, revealing that slab thickness and position significantly influence these properties and induce step-like polarization behavior.

Contribution

It introduces a theoretical analysis of the impact of non-ferroelectric slabs on ferroelectric multilayers using the transverse Ising model with four-spin interactions.

Findings

Increasing slab thickness decreases polarization and susceptibility.

Shifting the slab position alters the number of susceptibility peaks.

A step-like polarization curve emerges under certain conditions.

Abstract

The polarization and the susceptibility of a ferroelectric multilayer with a non-ferroelectric slab are investigated within the framework of transverse Ising model with a four-spin interaction term. The effect of the thickness and the position of the non-ferroelectric slab are investigated in this paper. We find that the increase of the thickness of the non-ferroelectric will decrease the polarization and the susceptibility of the film. If the position of the non-ferroelcetric slab shifts from the center of the film to the surface, the number of the peaks of the susceptibility will change. And a step-like polarization curve is found.