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Direct observation of intrinsic room-temperature ferroelectricity in 2D layered CuCrP(2)S(6)

Multiferroic materials have ignited enormous interest owing to their co-existence of ferroelectricity and ferromagnetism, which hold substantial promise for advanced device applications. However, the size effect, dangling bonds, and interface effect in traditional multiferroics severely hinder their...

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Autores principales: Io, Weng Fu, Pang, Sin -Yi, Wong, Lok Wing, Zhao, Yuqian, Ding, Ran, Mao, Jianfeng, Zhao, Yifei, Guo, Feng, Yuan, Shuoguo, Zhao, Jiong, Yi, Jiabao, Hao, Jianhua
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10640637/
https://www.ncbi.nlm.nih.gov/pubmed/37951934
http://dx.doi.org/10.1038/s41467-023-43097-2
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author Io, Weng Fu
Pang, Sin -Yi
Wong, Lok Wing
Zhao, Yuqian
Ding, Ran
Mao, Jianfeng
Zhao, Yifei
Guo, Feng
Yuan, Shuoguo
Zhao, Jiong
Yi, Jiabao
Hao, Jianhua
author_facet Io, Weng Fu
Pang, Sin -Yi
Wong, Lok Wing
Zhao, Yuqian
Ding, Ran
Mao, Jianfeng
Zhao, Yifei
Guo, Feng
Yuan, Shuoguo
Zhao, Jiong
Yi, Jiabao
Hao, Jianhua
author_sort Io, Weng Fu
collection PubMed
description Multiferroic materials have ignited enormous interest owing to their co-existence of ferroelectricity and ferromagnetism, which hold substantial promise for advanced device applications. However, the size effect, dangling bonds, and interface effect in traditional multiferroics severely hinder their potential in nanoscale device applications. Recent theoretical and experimental studies have evidenced the possibility of realizing two-dimensional (2D) multiferroicity in van der Waals (vdW) layered CuCrP(2)S(6). However, the incorporation of magnetic Cr ions in the ferroelectric framework leads to antiferroelectric and antiferromagnetic orderings, while macroscopic spontaneous polarization is always absent. Herein, we report the direct observation of robust out-of-plane ferroelectricity in 2D vdW CuCrP(2)S(6) at room temperature with a comprehensive investigation. Modification of the ferroelectric polarization states in 2D CuCrP(2)S(6) nanoflakes is experimentally demonstrated. Moreover, external electric field-induced polarization switching and hysteresis loops are obtained in CuCrP(2)S(6) down to ~2.6 nm (4 layers). By using atomically resolved scanning transmission electron microscopy, we unveil the origin of the emerged room-temperature ferroelectricity in 2D CuCrP(2)S(6). Our work can facilitate the development of multifunctional nanodevices and provide important insights into the nature of ferroelectric ordering of this 2D vdW material.
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spelling pubmed-106406372023-11-11 Direct observation of intrinsic room-temperature ferroelectricity in 2D layered CuCrP(2)S(6) Io, Weng Fu Pang, Sin -Yi Wong, Lok Wing Zhao, Yuqian Ding, Ran Mao, Jianfeng Zhao, Yifei Guo, Feng Yuan, Shuoguo Zhao, Jiong Yi, Jiabao Hao, Jianhua Nat Commun Article Multiferroic materials have ignited enormous interest owing to their co-existence of ferroelectricity and ferromagnetism, which hold substantial promise for advanced device applications. However, the size effect, dangling bonds, and interface effect in traditional multiferroics severely hinder their potential in nanoscale device applications. Recent theoretical and experimental studies have evidenced the possibility of realizing two-dimensional (2D) multiferroicity in van der Waals (vdW) layered CuCrP(2)S(6). However, the incorporation of magnetic Cr ions in the ferroelectric framework leads to antiferroelectric and antiferromagnetic orderings, while macroscopic spontaneous polarization is always absent. Herein, we report the direct observation of robust out-of-plane ferroelectricity in 2D vdW CuCrP(2)S(6) at room temperature with a comprehensive investigation. Modification of the ferroelectric polarization states in 2D CuCrP(2)S(6) nanoflakes is experimentally demonstrated. Moreover, external electric field-induced polarization switching and hysteresis loops are obtained in CuCrP(2)S(6) down to ~2.6 nm (4 layers). By using atomically resolved scanning transmission electron microscopy, we unveil the origin of the emerged room-temperature ferroelectricity in 2D CuCrP(2)S(6). Our work can facilitate the development of multifunctional nanodevices and provide important insights into the nature of ferroelectric ordering of this 2D vdW material. Nature Publishing Group UK 2023-11-11 /pmc/articles/PMC10640637/ /pubmed/37951934 http://dx.doi.org/10.1038/s41467-023-43097-2 Text en © The Author(s) 2023 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Io, Weng Fu
Pang, Sin -Yi
Wong, Lok Wing
Zhao, Yuqian
Ding, Ran
Mao, Jianfeng
Zhao, Yifei
Guo, Feng
Yuan, Shuoguo
Zhao, Jiong
Yi, Jiabao
Hao, Jianhua
Direct observation of intrinsic room-temperature ferroelectricity in 2D layered CuCrP(2)S(6)
title Direct observation of intrinsic room-temperature ferroelectricity in 2D layered CuCrP(2)S(6)
title_full Direct observation of intrinsic room-temperature ferroelectricity in 2D layered CuCrP(2)S(6)
title_fullStr Direct observation of intrinsic room-temperature ferroelectricity in 2D layered CuCrP(2)S(6)
title_full_unstemmed Direct observation of intrinsic room-temperature ferroelectricity in 2D layered CuCrP(2)S(6)
title_short Direct observation of intrinsic room-temperature ferroelectricity in 2D layered CuCrP(2)S(6)
title_sort direct observation of intrinsic room-temperature ferroelectricity in 2d layered cucrp(2)s(6)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10640637/
https://www.ncbi.nlm.nih.gov/pubmed/37951934
http://dx.doi.org/10.1038/s41467-023-43097-2
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