Jump to main content
Jump to site search

Issue 23, 2015
Previous Article Next Article

Understanding ferroelectricity in layered perovskites: new ideas and insights from theory and experiments

Author affiliations

Abstract

ABO3 perovskites have fascinated solid-state chemists and physicists for decades because they display a seemingly inexhaustible variety of chemical and physical properties. However, despite the diversity of properties found among perovskites, very few of these materials are ferroelectric, or even polar, in bulk. In this Perspective, we highlight recent theoretical and experimental studies that have shown how a combination of non-polar structural distortions, commonly tilts or rotations of the BO6 octahedra, can give rise to polar structures or ferroelectricity in several families of layered perovskites. We discuss the crystal chemical origin of the polarization in each of these families – which emerges through a so-called ‘trilinear coupling’ or ‘hybrid improper’ mechanism – and emphasize areas in which further theoretical and experimental investigation is needed. We also consider how this mechanism may provide a generic route for designing not only new ferroelectrics, but also materials with various other multifunctionalities, such as magnetoelectrics and electric field-controllable metal-insulator transitions.

Graphical abstract: Understanding ferroelectricity in layered perovskites: new ideas and insights from theory and experiments

  • This article is part of the themed collection: Perovskites
Back to tab navigation

Article information


Submitted
03 Jan 2015
Accepted
06 Feb 2015
First published
06 Feb 2015

Dalton Trans., 2015,44, 10543-10558
Article type
Perspective
Author version available

Understanding ferroelectricity in layered perovskites: new ideas and insights from theory and experiments

N. A. Benedek, J. M. Rondinelli, H. Djani, P. Ghosez and P. Lightfoot, Dalton Trans., 2015, 44, 10543
DOI: 10.1039/C5DT00010F

Social activity

Search articles by author

Spotlight

Advertisements