Ambient effect on the Curie temperatures and magnetic domains in metallic two-dimensional magnets

Abstract The emergent magnetic two-dimensional (2D) materials provide ideal solid-state platforms for a broad range of applications including miniaturized spintronics, nonreciprocal optics, and magnetoelectric sensors. Owing to the general environmental sensitivity of 2D magnets, the understanding o...

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Autores principales: Zhiyin Tu, Ti Xie, Yeonghun Lee, Jinling Zhou, Alemayehu S. Admasu, Yu Gong, Nagarajan Valanoor, John Cumings, Sang-Wook Cheong, Ichiro Takeuchi, Kyeongjae Cho, Cheng Gong
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Publicado: Nature Portfolio 2021
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Acceso en línea:https://doaj.org/article/5024808cb184406eb645cff1f571f2c4
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spelling oai:doaj.org-article:5024808cb184406eb645cff1f571f2c42021-12-02T16:31:48ZAmbient effect on the Curie temperatures and magnetic domains in metallic two-dimensional magnets10.1038/s41699-021-00242-z2397-7132https://doaj.org/article/5024808cb184406eb645cff1f571f2c42021-06-01T00:00:00Zhttps://doi.org/10.1038/s41699-021-00242-zhttps://doaj.org/toc/2397-7132Abstract The emergent magnetic two-dimensional (2D) materials provide ideal solid-state platforms for a broad range of applications including miniaturized spintronics, nonreciprocal optics, and magnetoelectric sensors. Owing to the general environmental sensitivity of 2D magnets, the understanding of ambient effects on 2D magnetism is critical. Apparently, the nature of itinerant ferromagnetism potentially makes metallic 2D magnets insensitive to environmental disturbance. Nevertheless, our systematic study showed that the Curie temperature of metallic 2D Fe3GeTe2 decreases dramatically in the air but thick Fe3GeTe2 exhibits self-protection. Remarkably, we found the air exposure effectively promotes the formation of multiple magnetic domains in 2D Fe3GeTe2, but not in bulk Fe3GeTe2. Our first-principles calculations support the scenario that substrate-induced roughness and tellurium vacancies boost the interaction of 2D Fe3GeTe2 with the air. Our elucidation of the thickness-dependent air-catalyzed evolution of Curie temperatures and magnetic domains in 2D magnets provides critical insights for chemically decorating and manipulating 2D magnets.Zhiyin TuTi XieYeonghun LeeJinling ZhouAlemayehu S. AdmasuYu GongNagarajan ValanoorJohn CumingsSang-Wook CheongIchiro TakeuchiKyeongjae ChoCheng GongNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492ChemistryQD1-999ENnpj 2D Materials and Applications, Vol 5, Iss 1, Pp 1-6 (2021)
institution DOAJ
collection DOAJ
language EN
topic Materials of engineering and construction. Mechanics of materials
TA401-492
Chemistry
QD1-999
spellingShingle Materials of engineering and construction. Mechanics of materials
TA401-492
Chemistry
QD1-999
Zhiyin Tu
Ti Xie
Yeonghun Lee
Jinling Zhou
Alemayehu S. Admasu
Yu Gong
Nagarajan Valanoor
John Cumings
Sang-Wook Cheong
Ichiro Takeuchi
Kyeongjae Cho
Cheng Gong
Ambient effect on the Curie temperatures and magnetic domains in metallic two-dimensional magnets
description Abstract The emergent magnetic two-dimensional (2D) materials provide ideal solid-state platforms for a broad range of applications including miniaturized spintronics, nonreciprocal optics, and magnetoelectric sensors. Owing to the general environmental sensitivity of 2D magnets, the understanding of ambient effects on 2D magnetism is critical. Apparently, the nature of itinerant ferromagnetism potentially makes metallic 2D magnets insensitive to environmental disturbance. Nevertheless, our systematic study showed that the Curie temperature of metallic 2D Fe3GeTe2 decreases dramatically in the air but thick Fe3GeTe2 exhibits self-protection. Remarkably, we found the air exposure effectively promotes the formation of multiple magnetic domains in 2D Fe3GeTe2, but not in bulk Fe3GeTe2. Our first-principles calculations support the scenario that substrate-induced roughness and tellurium vacancies boost the interaction of 2D Fe3GeTe2 with the air. Our elucidation of the thickness-dependent air-catalyzed evolution of Curie temperatures and magnetic domains in 2D magnets provides critical insights for chemically decorating and manipulating 2D magnets.
format article
author Zhiyin Tu
Ti Xie
Yeonghun Lee
Jinling Zhou
Alemayehu S. Admasu
Yu Gong
Nagarajan Valanoor
John Cumings
Sang-Wook Cheong
Ichiro Takeuchi
Kyeongjae Cho
Cheng Gong
author_facet Zhiyin Tu
Ti Xie
Yeonghun Lee
Jinling Zhou
Alemayehu S. Admasu
Yu Gong
Nagarajan Valanoor
John Cumings
Sang-Wook Cheong
Ichiro Takeuchi
Kyeongjae Cho
Cheng Gong
author_sort Zhiyin Tu
title Ambient effect on the Curie temperatures and magnetic domains in metallic two-dimensional magnets
title_short Ambient effect on the Curie temperatures and magnetic domains in metallic two-dimensional magnets
title_full Ambient effect on the Curie temperatures and magnetic domains in metallic two-dimensional magnets
title_fullStr Ambient effect on the Curie temperatures and magnetic domains in metallic two-dimensional magnets
title_full_unstemmed Ambient effect on the Curie temperatures and magnetic domains in metallic two-dimensional magnets
title_sort ambient effect on the curie temperatures and magnetic domains in metallic two-dimensional magnets
publisher Nature Portfolio
publishDate 2021
url https://doaj.org/article/5024808cb184406eb645cff1f571f2c4
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