Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/163255
Title: Free-standing 2D non-van der Waals antiferromagnetic hexagonal FeSe semiconductor: halide-assisted chemical synthesis and Fe²⁺ related magnetic transitions
Authors: Xu, Junjie
Li, Wei
Zhang, Biao
Zha, Liang
Hao, Wei
Hu, Shixin
Yang, Jinbo
Li, ShuZhou
Gao, Song
Hou, Yanglong
Keywords: Engineering::Materials
Issue Date: 2022
Source: Xu, J., Li, W., Zhang, B., Zha, L., Hao, W., Hu, S., Yang, J., Li, S., Gao, S. & Hou, Y. (2022). Free-standing 2D non-van der Waals antiferromagnetic hexagonal FeSe semiconductor: halide-assisted chemical synthesis and Fe²⁺ related magnetic transitions. Chemical Science, 13(1), 203-209. https://dx.doi.org/10.1039/d1sc04122c
Journal: Chemical Science
Abstract: The scarcity of two-dimensional (2D) magnetic nanostructures has hindered their applications in spintronics, which is attributed to that most magnetic materials exhibit non-van der Waals (nvdWs) structures and it is hard to reduce their thickness to 2D nanostructures. Thus it is necessary to develop a promising strategy for free-standing 2D magnetic nvdWs nanostructures. We have achieved free-standing 2D nvdWs hexagonal FeSe with a thickness of 2.9 nm by the reaction between the oleylamine-Se complex and Fe2+ with the assistance of Cl-, where the synergetic effects of Cl- and -NH2 lead to anisotropic growth. Inspiringly, the 2D hexagonal FeSe exhibits intrinsic antiferromagnetic order rooted in Fe2+ and semiconducting nature. In addition, the temperature variation would result in the chemical environment changes of Fe2+, responsible for the temperature-dependent magnetic transitions. This work promotes the potential applications of 2D hexagonal FeSe and the preparation of other 2D nvdWs materials.
URI: https://hdl.handle.net/10356/163255
ISSN: 2041-6520
DOI: 10.1039/d1sc04122c
Rights: © 2022 The Author(s). Published by the Royal Society of Chemistry. This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles

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