南方科技大学知识苑(SUSTech KC): Above-Room-Temperature Ferroelectricity and Giant Second Harmonic Generation in 1D vdW NbOI<inf>3</inf>

题名	Above-Room-Temperature Ferroelectricity and Giant Second Harmonic Generation in 1D vdW NbOI3
作者	Fang, Yuqiang 1,2,3; Liu, Yue 4; Yang, Niuzhuang 5; Wang, Gang 6 ; He, Wen 4; Zhou, Xinyi 7; Xia, Shian 7; Wang, Dong 8; Fu, Jierui 4; Wang, Jiapeng 4; Ding, Yang 8; Yu, Ting 9,10; Xu, Chengyan 11; Zhen, Liang 4,11; Lin, Junhao6,12 ; Gou, Gaoyang 13; Li, Yang 4; Huang, Fuqiang 1,2,3
通讯作者	Lin, Junhao; Gou, Gaoyang; Li, Yang; Huang, Fuqiang
发表日期	2024
DOI	10.1002/adma.202407249
发表期刊	Advanced Materials 影响因子和分区
ISSN	0935-9648
EISSN	1521-4095
摘要	The realization of spontaneous ferroelectricity down to the one-dimensional (1D) limit is both fundamentally intriguing and practically appealing for high-density ferroelectric and nonlinear photonics. However, the 1D vdW ferroelectric materials are not discovered experimentally yet. Here, the first 1D vdW ferroelectric compound NbOI3 with a high Curie temperature TC > 450 K and giant second harmonic generation (SHG) is reported. The 1D crystalline chain structure of the NbOI3 is revealed by cryo-electron microscopy, whereas the 1D ferroelectric order originated from the Nb displacement along the Nb-O chain (b-axis) is confirmed via obvious electrical and ferroelectric hysteresis loops. Impressively, NbOI3 exhibits a giant SHG susceptibility up to 1572 pm V⁻¹ at a fundamental wavelength of 810 nm, and a further enhanced SHG susceptibility of 5582 pm V⁻¹ under the applied hydrostatic pressure of 2.06 GPa. Combing in situ pressure-dependent X-ray diffraction, Raman spectra measurements, and first-principles calculations, it is demonstrated that the O atoms shift along the Nb─O atomic chain under compression, which can lead to the increased Baur distortion of [NbO2I4] octahedra, and hence induces the enhancement of SHG. This work provides a 1D vdW ferroelectric system for developing novel ferroelectronic and photonic devices. © 2024 Wiley-VCH GmbH.
收录类别	EI
语种	英语
学校署名	通讯
出版者	John Wiley and Sons Inc
EI入藏号	20243516953157
EI主题词	Copper compounds ; Crystal atomic structure ; Ferroelectric devices ; Neodymium compounds ; Photons
EI分类号	:1301.1.3 ; :1301.4.1.1 ; :202.4.1 ; :202.7.2 ; :202.9.3 ; Electric Components and Equipment:704
来源库	EV Compendex
引用统计	被引频次[WOS]：1
成果类型	期刊论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/832798
专题	理学院_物理系南方科技大学
作者单位	1.School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai; 200240, China 2.Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai; 200240, China 3.State Key Laboratory of High-Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics Chinese Academy of Sciences, Shanghai; 200050, China 4.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin; 150001, China 5.School of Instrument and Electronics, North University of China, Taiyuan; 030051, China 6.Department of Physics and Shenzhen Key Laboratory of Advanced Quantum Functional Materials and Devices, Southern University of Science and Technology, Shenzhen; 518055, China 7.School of Physics and Technology, Wuhan University, Wuhan; 430072, China 8.Center for High-pressure Science &Technology Advanced Research, Beijing; 100094, China 9.Wuhan Institute of Quantum Technology, Wuhan; 430206, China 10.Key Laboratory of Artificial Micro- and Nano- structures of Ministry of Education, Wuhan University, Wuhan; 430072, China 11.Sauvage Laboratory for Smart Materials, School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen; 518055, China 12.Quantum Science Center of Guangdong-Hong Kong-Macao Greater Bay Area (Guangdong), Shenzhen; 518045, China 13.Frontier Institute of Science and Technology, and State Key Laboratory of Electrical Insulation and Power Equipment, Xian Jiaotong University, Xian; 710049, China
通讯作者单位	物理系
推荐引用方式 GB/T 7714	Fang, Yuqiang,Liu, Yue,Yang, Niuzhuang,et al. Above-Room-Temperature Ferroelectricity and Giant Second Harmonic Generation in 1D vdW NbOI3[J]. Advanced Materials,2024.
APA	Fang, Yuqiang.,Liu, Yue.,Yang, Niuzhuang.,Wang, Gang.,He, Wen.,...&Huang, Fuqiang.(2024).Above-Room-Temperature Ferroelectricity and Giant Second Harmonic Generation in 1D vdW NbOI3.Advanced Materials.
MLA	Fang, Yuqiang,et al."Above-Room-Temperature Ferroelectricity and Giant Second Harmonic Generation in 1D vdW NbOI3".Advanced Materials (2024).