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Title: Room temperature ferroelectricity in fluoroperovskite thin films
Authors: Yang, Ming
KC, Amit
Garcia-Castro, Andres C.
Borisov, Pavel
Bousquet, E.
Lederman, David
Romero, Aldo H.
Cen, Cheng
Keywords: Ferroelectrics and multiferroics
Surfaces, interfaces and thin films
Issue Date: 2017
Publisher: Nature Publishing Group © The Author(s)
Citation: YANG, M. ... et al, 2017. Room temperature ferroelectricity in fluoroperovskite thin films. Scientific Reports, 7 (1), 7182.
Abstract: The NaMnF 3 fluoride-perovskite has been found, theoretically, to be ferroelectric under epitaxial strain becoming a promising alternative to conventional oxides for multiferroic applications. Nevertheless, this fluoroperovskite has not been experimentally verified to be ferroelectric so far. Here we report signatures of room temperature ferroelectricity observed in perovskite NaMnF 3 thin films grown on SrTiO 3 . Using piezoresponse force microscopy, we studied the evolution of ferroelectric polarization in response to external and built-in electric fields. Density functional theory calculations were also performed to help understand the strong competition between ferroelectric and paraelectric phases as well as the profound influences of strain. These results, together with the magnetic order previously reported in the same material, pave the way to future multiferroic and magnetoelectric investigations in fluoroperovskites.
Description: This is an Open Access Article. It is published by Nature Publishing Group under the Creative Commons Attribution 4.0 Interntaional Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/
Sponsor: This work is supported by National Science Foundation Grant No. DMREF-NSF 1434897. This work used the Extreme Science and Engineering Discovery Environment (XSEDE), which is supported by National Science Foundation Grant No. OCI-1053575.
Version: Published
DOI: 10.1038/s41598-017-07834-0
URI: https://dspace.lboro.ac.uk/2134/26903
Publisher Link: https://doi.org/10.1038/s41598-017-07834-0
Appears in Collections:Published Articles (Physics)

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