Article (Scientific journals)
Room temperature ferroelectricity in fluoroperovskite thin films
Ming Yang, Amit KC; García Castro, Andrès Camilo; Borisov, Pavel et al.
2017In Scientific Reports, 7, p. 7182
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Keywords :
Ferroelectric; Fluoride perovskite; multiferroic
Abstract :
[en] The NaMnF3 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 NaMnF3 thin films grown on SrTiO3. 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.
Research center :
Phythema
Disciplines :
Physics
Author, co-author :
Ming Yang, Amit KC;  University of California, Santa Cruz > Department of Physics
García Castro, Andrès Camilo ;  Université de Liège - ULiège > Département de physique > Physique théorique des matériaux
Borisov, Pavel;  Loughborough University
Bousquet, Eric  ;  Université de Liège - ULiège > Département de physique > Physique théorique des matériaux
Lederman, David;  University of California, Santa Cruz
Romero, Aldo H;  West Virginia University
Cen, Cheng;  West Virginia University
Language :
English
Title :
Room temperature ferroelectricity in fluoroperovskite thin films
Publication date :
August 2017
Journal title :
Scientific Reports
eISSN :
2045-2322
Publisher :
Nature Publishing Group, London, United Kingdom
Volume :
7
Pages :
7182
Peer reviewed :
Peer Reviewed verified by ORBi
Tags :
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CÉCI : Consortium des Équipements de Calcul Intensif
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since 10 November 2017

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