On the Imbalance of the Dielectric Constant of the PbLixNb3xZr0.51Ti0.49-4xO3 Compound

TL;DR

This paper investigates how impurity content affects the dielectric constant in the PbLixNb3xZr0.51Ti0.49-4xO3 system, suggesting aggregation of off-centre dipoles as the cause of dielectric behavior changes.

Contribution

It provides a new explanation for dielectric constant variation based on dipole aggregation rather than cooperative phenomena.

Findings

Dielectric constant decreases with increased impurity content.

Aggregation of off-centre dipoles influences dielectric behavior.

The proposed model challenges previous cooperative phenomena explanations.

Abstract

In the present paper, the dielectric behaviour of the PbLixNb3xZr0.51Ti0.49-4xO3 ( PLNZT) system is analyzed. It is shown that the decrease in the dielectric constant with respect to an increase of the impurity content may be due to an aggregation trend of the interacting off-centre dipoles rather than due to cooperative phenomena which renormalizes the dipole moment of the off-centre impurity.