s41598-017-07834-0.pdf (2.8 MB)
Room temperature ferroelectricity in fluoroperovskite thin films
journal contribution
posted on 2017-10-11, 08:45 authored by Ming Yang, Amit KC, Andres C. Garcia-Castro, Pavel BorisovPavel Borisov, E. Bousquet, David Lederman, Aldo H. Romero, Cheng CenThe 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.
Funding
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.
History
School
- Science
Department
- Physics
Published in
Scientific ReportsVolume
7Issue
1Citation
YANG, M. ... et al, 2017. Room temperature ferroelectricity in fluoroperovskite thin films. Scientific Reports, 7 (1), 7182.Publisher
Nature Publishing Group © The Author(s)Version
- VoR (Version of Record)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution 4.0 International (CC BY 4.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/ by/4.0/Acceptance date
2017-07-04Publication date
2017-08-03Copyright date
2017Notes
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/eISSN
2045-2322Publisher version
Language
- en