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An antisite defect mechanism for room temperature ferroelectricity in orthoferrites

Single-phase multiferroic materials that allow the coexistence of ferroelectric and magnetic ordering above room temperature are highly desirable, motivating an ongoing search for mechanisms for unconventional ferroelectricity in magnetic oxides. Here, we report an antisite defect mechanism for room...

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Autores principales: Ning, Shuai, Kumar, Abinash, Klyukin, Konstantin, Cho, Eunsoo, Kim, Jong Heon, Su, Tingyu, Kim, Hyun-Suk, LeBeau, James M., Yildiz, Bilge, Ross, Caroline A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8280199/
https://www.ncbi.nlm.nih.gov/pubmed/34262033
http://dx.doi.org/10.1038/s41467-021-24592-w
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author Ning, Shuai
Kumar, Abinash
Klyukin, Konstantin
Cho, Eunsoo
Kim, Jong Heon
Su, Tingyu
Kim, Hyun-Suk
LeBeau, James M.
Yildiz, Bilge
Ross, Caroline A.
author_facet Ning, Shuai
Kumar, Abinash
Klyukin, Konstantin
Cho, Eunsoo
Kim, Jong Heon
Su, Tingyu
Kim, Hyun-Suk
LeBeau, James M.
Yildiz, Bilge
Ross, Caroline A.
author_sort Ning, Shuai
collection PubMed
description Single-phase multiferroic materials that allow the coexistence of ferroelectric and magnetic ordering above room temperature are highly desirable, motivating an ongoing search for mechanisms for unconventional ferroelectricity in magnetic oxides. Here, we report an antisite defect mechanism for room temperature ferroelectricity in epitaxial thin films of yttrium orthoferrite, YFeO(3), a perovskite-structured canted antiferromagnet. A combination of piezoresponse force microscopy, atomically resolved elemental mapping with aberration corrected scanning transmission electron microscopy and density functional theory calculations reveals that the presence of Y(Fe) antisite defects facilitates a non-centrosymmetric distortion promoting ferroelectricity. This mechanism is predicted to work analogously for other rare earth orthoferrites, with a dependence of the polarization on the radius of the rare earth cation. Our work uncovers the distinctive role of antisite defects in providing a mechanism for ferroelectricity in a range of magnetic orthoferrites and further augments the functionality of this family of complex oxides for multiferroic applications.
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spelling pubmed-82801992021-07-23 An antisite defect mechanism for room temperature ferroelectricity in orthoferrites Ning, Shuai Kumar, Abinash Klyukin, Konstantin Cho, Eunsoo Kim, Jong Heon Su, Tingyu Kim, Hyun-Suk LeBeau, James M. Yildiz, Bilge Ross, Caroline A. Nat Commun Article Single-phase multiferroic materials that allow the coexistence of ferroelectric and magnetic ordering above room temperature are highly desirable, motivating an ongoing search for mechanisms for unconventional ferroelectricity in magnetic oxides. Here, we report an antisite defect mechanism for room temperature ferroelectricity in epitaxial thin films of yttrium orthoferrite, YFeO(3), a perovskite-structured canted antiferromagnet. A combination of piezoresponse force microscopy, atomically resolved elemental mapping with aberration corrected scanning transmission electron microscopy and density functional theory calculations reveals that the presence of Y(Fe) antisite defects facilitates a non-centrosymmetric distortion promoting ferroelectricity. This mechanism is predicted to work analogously for other rare earth orthoferrites, with a dependence of the polarization on the radius of the rare earth cation. Our work uncovers the distinctive role of antisite defects in providing a mechanism for ferroelectricity in a range of magnetic orthoferrites and further augments the functionality of this family of complex oxides for multiferroic applications. Nature Publishing Group UK 2021-07-14 /pmc/articles/PMC8280199/ /pubmed/34262033 http://dx.doi.org/10.1038/s41467-021-24592-w Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Ning, Shuai
Kumar, Abinash
Klyukin, Konstantin
Cho, Eunsoo
Kim, Jong Heon
Su, Tingyu
Kim, Hyun-Suk
LeBeau, James M.
Yildiz, Bilge
Ross, Caroline A.
An antisite defect mechanism for room temperature ferroelectricity in orthoferrites
title An antisite defect mechanism for room temperature ferroelectricity in orthoferrites
title_full An antisite defect mechanism for room temperature ferroelectricity in orthoferrites
title_fullStr An antisite defect mechanism for room temperature ferroelectricity in orthoferrites
title_full_unstemmed An antisite defect mechanism for room temperature ferroelectricity in orthoferrites
title_short An antisite defect mechanism for room temperature ferroelectricity in orthoferrites
title_sort antisite defect mechanism for room temperature ferroelectricity in orthoferrites
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8280199/
https://www.ncbi.nlm.nih.gov/pubmed/34262033
http://dx.doi.org/10.1038/s41467-021-24592-w
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