Complex magnetic incommensurability and electronic charge transfer through the ferroelectric transition in multiferroic Co3TeO6

Abstract Polarized and unpolarized neutron diffractions have been carried out to investigate the nature of the magnetic structures and transitions in monoclinic Co3TeO6. As the temperature is lowered below 26 K long range order develops, which is fully incommensurate (ICM) in all three crystallograp...

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Autores principales:	Chi-Hung Lee, Chin-Wei Wang, Yang Zhao, Wen-Hsien Li, Jeffrey W. Lynn, A. Brooks Harris, Kirrily Rule, Hung-Duen Yang, Helmuth Berger
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9fa07b057b2f4cc980468d87109ca191
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spelling	oai:doaj.org-article:9fa07b057b2f4cc980468d87109ca1912021-12-02T16:06:58ZComplex magnetic incommensurability and electronic charge transfer through the ferroelectric transition in multiferroic Co3TeO610.1038/s41598-017-06651-92045-2322https://doaj.org/article/9fa07b057b2f4cc980468d87109ca1912017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-06651-9https://doaj.org/toc/2045-2322Abstract Polarized and unpolarized neutron diffractions have been carried out to investigate the nature of the magnetic structures and transitions in monoclinic Co3TeO6. As the temperature is lowered below 26 K long range order develops, which is fully incommensurate (ICM) in all three crystallographic directions. Below 19.5 K additional commensurate magnetic peaks develop, consistent with the Γ4 irreducible representation, along with a splitting of the ICM peaks along the h direction which indicates that there are two separate sets of magnetic modulation vectors. Below 18 K, this small additional magnetic incommensurability disappears, ferroelectricity develops, an additional commensurate magnetic structure consistent with Γ3 irreducible representation appears, and the k component of the ICM wave vector disappears. Synchrotron x-ray diffraction measurements demonstrate that there is a significant shift of the electronic charge distribution from the Te ions at the crystallographic 8 f sites to the neighboring Co and O ions. These results, together with the unusually small electric polarization, its strong magnetic field dependence, and the negative thermal expansion in all three lattice parameters, suggest this material is an antiferroelectric. Below15 K the k component of the ICM structure reappears, along with second-order ICM Bragg peaks, which polarized neutron data demonstrate are magnetic in origin.Chi-Hung LeeChin-Wei WangYang ZhaoWen-Hsien LiJeffrey W. LynnA. Brooks HarrisKirrily RuleHung-Duen YangHelmuth BergerNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-16 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Chi-Hung Lee Chin-Wei Wang Yang Zhao Wen-Hsien Li Jeffrey W. Lynn A. Brooks Harris Kirrily Rule Hung-Duen Yang Helmuth Berger Complex magnetic incommensurability and electronic charge transfer through the ferroelectric transition in multiferroic Co3TeO6
description	Abstract Polarized and unpolarized neutron diffractions have been carried out to investigate the nature of the magnetic structures and transitions in monoclinic Co3TeO6. As the temperature is lowered below 26 K long range order develops, which is fully incommensurate (ICM) in all three crystallographic directions. Below 19.5 K additional commensurate magnetic peaks develop, consistent with the Γ4 irreducible representation, along with a splitting of the ICM peaks along the h direction which indicates that there are two separate sets of magnetic modulation vectors. Below 18 K, this small additional magnetic incommensurability disappears, ferroelectricity develops, an additional commensurate magnetic structure consistent with Γ3 irreducible representation appears, and the k component of the ICM wave vector disappears. Synchrotron x-ray diffraction measurements demonstrate that there is a significant shift of the electronic charge distribution from the Te ions at the crystallographic 8 f sites to the neighboring Co and O ions. These results, together with the unusually small electric polarization, its strong magnetic field dependence, and the negative thermal expansion in all three lattice parameters, suggest this material is an antiferroelectric. Below15 K the k component of the ICM structure reappears, along with second-order ICM Bragg peaks, which polarized neutron data demonstrate are magnetic in origin.
format	article
author	Chi-Hung Lee Chin-Wei Wang Yang Zhao Wen-Hsien Li Jeffrey W. Lynn A. Brooks Harris Kirrily Rule Hung-Duen Yang Helmuth Berger
author_facet	Chi-Hung Lee Chin-Wei Wang Yang Zhao Wen-Hsien Li Jeffrey W. Lynn A. Brooks Harris Kirrily Rule Hung-Duen Yang Helmuth Berger
author_sort	Chi-Hung Lee
title	Complex magnetic incommensurability and electronic charge transfer through the ferroelectric transition in multiferroic Co3TeO6
title_short	Complex magnetic incommensurability and electronic charge transfer through the ferroelectric transition in multiferroic Co3TeO6
title_full	Complex magnetic incommensurability and electronic charge transfer through the ferroelectric transition in multiferroic Co3TeO6
title_fullStr	Complex magnetic incommensurability and electronic charge transfer through the ferroelectric transition in multiferroic Co3TeO6
title_full_unstemmed	Complex magnetic incommensurability and electronic charge transfer through the ferroelectric transition in multiferroic Co3TeO6
title_sort	complex magnetic incommensurability and electronic charge transfer through the ferroelectric transition in multiferroic co3teo6
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/9fa07b057b2f4cc980468d87109ca191
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_version_	1718384794170032128

Complex magnetic incommensurability and electronic charge transfer through the ferroelectric transition in multiferroic Co3TeO6

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