Yin, Chunhai;
Li, Yaqi;
Zatterin, Edoardo;
Rusu, Dorin;
Stylianidis, Evgenios;
Hadjimichael, Marios;
Aramberri, Hugo;
... Zubko, Pavlo; + view all
(2024)
Mimicking Antiferroelectrics with Ferroelectric Superlattices.
Advanced Materials
, Article 2403985. 10.1002/adma.202403985.
(In press).
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Abstract
Antiferroelectric oxides are promising materials for applications in high-density energy storage, solid-state cooling, and negative capacitance devices. However, the range of oxide antiferroelectrics available today is rather limited. In this work, it is demonstrated that antiferroelectric properties can be electrostatically engineered in artificially layered ferroelectric superlattices. Using a combination of synchrotron X-ray nanodiffraction, scanning transmission electron microscopy, macroscopic electrical measurements, and lateral and vertical piezoresponse force microscopy in parallel-plate capacitor geometry, a highly reversible field-induced transition is observed from a stable in-plane polarized state to a state with in-plane and out-of-plane polarized nanodomains that mimics, at the domain level, the nonpolar to polar transition of traditional antiferroelectrics, with corresponding polarization-voltage double hysteresis and comparable energy storage capacity. Furthermore, it is found that such superlattices exhibit large out-of-plane dielectric responses without involving flux-closure domain dynamics. These results demonstrate that electrostatic and strain engineering in artificially layered materials offers a promising route for the creation of synthetic antiferroelectrics.
| Type: | Article |
|---|---|
| Title: | Mimicking Antiferroelectrics with Ferroelectric Superlattices |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1002/adma.202403985 |
| Publisher version: | https://doi.org/10.1002/adma.202403985 |
| Language: | English |
| Additional information: | Copyright © 2024 The Author(s). Advanced Materials published by Wiley-VCH GmbH This is an open access article under the terms of the Creative Commons Attribution License,https://creativecommons.org/licenses/by/4.0/, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
| Keywords: | Antiferroelectricity; domains; ferroelectric superlattices |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10197604 |
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