Intriguing spin–lattice interactions in EuTiO3

Abstract During the last decade the cubic perovskite oxide EuTiO3 (ETO) has attracted enormous novel research activities due to possible multiferroicity, hidden magnetism far above its Néel temperature at TN = 5.5 K, structural instability at TS = 282 K, possible application as magneto-electric opti...

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Auteurs principaux:	Annette Bussmann-Holder, Efthymios Liarokapis, Krystian Roleder
Format:	article
Langue:	EN
Publié:	Nature Portfolio 2021
Sujets:	Medicine R Science Q
Accès en ligne:	https://doaj.org/article/632f21f651584e5f8b51fdf233394634
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spelling	oai:doaj.org-article:632f21f651584e5f8b51fdf2333946342021-12-02T18:14:23ZIntriguing spin–lattice interactions in EuTiO310.1038/s41598-021-98503-w2045-2322https://doaj.org/article/632f21f651584e5f8b51fdf2333946342021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-98503-whttps://doaj.org/toc/2045-2322Abstract During the last decade the cubic perovskite oxide EuTiO3 (ETO) has attracted enormous novel research activities due to possible multiferroicity, hidden magnetism far above its Néel temperature at TN = 5.5 K, structural instability at TS = 282 K, possible application as magneto-electric optic device, and strong spin–lattice coupling. Here we address a novel highlight of this compound by showing that well below TS a further structural phase transition occurs below 210 K without the application of an external magnetic field, and by questioning the assumed tetragonal symmetry of the structure below TS where tiny deviations from true tetragonality are observed by birefringence and XRD measurements. It is suggested that the competition in the second nearest neighbor spin–spin interaction modulated by the lattice dynamics is at the origin of these new observations.Annette Bussmann-HolderEfthymios LiarokapisKrystian RolederNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Annette Bussmann-Holder Efthymios Liarokapis Krystian Roleder Intriguing spin–lattice interactions in EuTiO3
description	Abstract During the last decade the cubic perovskite oxide EuTiO3 (ETO) has attracted enormous novel research activities due to possible multiferroicity, hidden magnetism far above its Néel temperature at TN = 5.5 K, structural instability at TS = 282 K, possible application as magneto-electric optic device, and strong spin–lattice coupling. Here we address a novel highlight of this compound by showing that well below TS a further structural phase transition occurs below 210 K without the application of an external magnetic field, and by questioning the assumed tetragonal symmetry of the structure below TS where tiny deviations from true tetragonality are observed by birefringence and XRD measurements. It is suggested that the competition in the second nearest neighbor spin–spin interaction modulated by the lattice dynamics is at the origin of these new observations.
format	article
author	Annette Bussmann-Holder Efthymios Liarokapis Krystian Roleder
author_facet	Annette Bussmann-Holder Efthymios Liarokapis Krystian Roleder
author_sort	Annette Bussmann-Holder
title	Intriguing spin–lattice interactions in EuTiO3
title_short	Intriguing spin–lattice interactions in EuTiO3
title_full	Intriguing spin–lattice interactions in EuTiO3
title_fullStr	Intriguing spin–lattice interactions in EuTiO3
title_full_unstemmed	Intriguing spin–lattice interactions in EuTiO3
title_sort	intriguing spin–lattice interactions in eutio3
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/632f21f651584e5f8b51fdf233394634
work_keys_str_mv	AT annettebussmannholder intriguingspinlatticeinteractionsineutio3 AT efthymiosliarokapis intriguingspinlatticeinteractionsineutio3 AT krystianroleder intriguingspinlatticeinteractionsineutio3
_version_	1718378396386328576

Intriguing spin–lattice interactions in EuTiO3

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