Ferroelectricity in confined small particles

TL;DR

This paper investigates how pore geometry and electric coupling affect ferroelectric phase transitions in small particles within mesoporous matrices, revealing that interactions can alter transition temperatures and weaken size effects.

Contribution

It introduces a model explaining the impact of interparticle electric coupling and pore geometry on ferroelectric phase transitions in confined small particles.

Findings

Electric coupling can significantly change transition temperatures.

Pore geometry influences the ferroelectric phase transition.

Size effects are weakened in confined geometries.

Abstract

The influence of the pore network geometry and interparticle long-distance electric coupling on the ferroelectric phase transition in small particles embedded into mesoporous matrices is considered. It was shown that the temperature of the ferroelectric phase transition in a system of electrically linked particles can be well different from that in isolated small particles. In particular, the model suggests an explanation for the weakening of size-effects on the ferroelectric phase transition in confined geometry.