Noncentrosymmetric Nowotny Chimney Ladder Ferromagnet Cr4Ge7 with a High Curie Temperature of ∼207 K

doi:10.1021/acs.chemmater.4c00669

	Noncentrosymmetric Nowotny Chimney Ladder Ferromagnet Cr4Ge7 with a High Curie Temperature of ∼207 K
	Yu, Zhenhai1 ; Zhou, Kaijuan 2; Hou, Xiaofei1 ; Chen, Xuejiao 3; Tao, Zhen 2; Ye, Yunguan1 ; Xia, Wei1,12 ; Li, Zhongyang1 ; Zhao, Jinggeng 4; Wu, Wei 5; Liu, Ziyi 5; Wang, Xia1,11 ; Yu, Na1,11 ; Cheng, Jinguang 5; Luo, Jian-Lin 5; Zhang, Qiang 6; Pomjakushin, Vladimir Y.7; Zhong, Zhicheng 3; Zhang, Shihao 8; Soh, Jian-Rui 9,10; Lu, Xingye 2; Guo, Yanfeng1,12
	2024
发表期刊	CHEMISTRY OF MATERIALS (IF:7.2[JCR-2023],8.4[5-Year])
ISSN	0897-4756
EISSN	1520-5002
发表状态	已发表
DOI	10.1021/acs.chemmater.4c00669
摘要	Noncentrosymmetric magnets usually host intriguing magnetic interactions inherent in the crystal structure with broken inversion symmetry, which can give rise to rich magnetic behaviors. We report herein the high-pressure synthesis, crystal structure, magnetizations, and magnetic structure of a so-called Nowotny chimney ladder compound Cr4Ge7. Our analysis on the powder neutron diffraction data revises the crystal structure as a noncentrosymmetric space group (P4̅c2, No. 116). It exhibits two magnetic orders within the temperature range of 2-400 K. The first order at ∼207 K associated with a small magnetic moment of ∼0.75 μB is assigned to a commensurate ferromagnetic structure with a propagation vector k = (0, 0, 0). The weak itinerant ferromagnet nature should be caused by the complex Cr spin orders from different Wyckoff positions. The second order-like behavior at ∼18 K is assumed to arise from a competition between the Dzyaloshinskii-Moriya and Heisenberg interactions. The results provide an excellent platform for the study of intricate interactions among various magnetic exchanges as well as for the exploration of high-temperature exotic magnetic properties. © 2024 American Chemical Society.
关键词	Chimneys Chromium compounds Crystal symmetry Ferromagnetic materials Germanium alloys Magnetic moments Neutron diffraction Crystals structures Ferromagnets High Curie temperature High-pressure synthesis Inversion symmetry Ladder compounds Magnetic behavior Magnetic interactions Noncentrosymmetric space groups Powder neutron diffraction data
URL	查看原文
收录类别	EI ; SCI
语种	英语
资助项目	Shanghai Science and Technology Innovation Action Plan[21JC1402000] ; National Nature Science Foundation of China["920651","11934017","12304217","12025408"] ; National Key R&D Program of China["2023YFA1406100","2021YFA0718900","2022YFA1403000","2021YFA1400400"] ; State Key Laboratory of Functional Materials for Informatics, CAS[SKL2022] ; Beijing National Laboratory for Condensed Matter Physics[2023BNLCMPKF002] ; State Key Laboratory of Surface Physics and Department of Physics, Fudan University[KF2022_13] ; Shanghai Sailing Program[23YF1426900] ; Analytical Instrumentation Center[SPST-AIC10112914]
WOS研究方向	Chemistry ; Materials Science
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary
WOS记录号	WOS:001270036200001
出版者	American Chemical Society
EI入藏号	20243016741564
EI主题词	Ferromagnetism
EI分类号	402.1 Industrial and Agricultural Buildings ; 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals ; 701.2 Magnetism: Basic Concepts and Phenomena ; 708.4 Magnetic Materials ; 933.1.1 Crystal Lattice
原始文献类型	Article in Press
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/407241
专题	物质科学与技术学院物质科学与技术学院_PI研究组_郭艳峰组物质科学与技术学院_公共科研平台_分析测试平台物质科学与技术学院_硕士生物质科学与技术学院_博士生物质科学与技术学院_公共科研平台_拓扑物理实验室
通讯作者	Zhang, Shihao; Soh, Jian-Rui; Lu, Xingye; Guo, Yanfeng
作者单位	1.School of Physical Science and Technology, ShanghaiTech University, Shanghai; 201210, China; 2.Center for Advanced Quantum Studies and Department of Physics, Beijing Normal University, Beijing; 100875, China; 3.Key Laboratory of Magnetic Materials and Devices & Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo; 315201, China; 4.School of Physics, Harbin Institute of Technology, Harbin; 150080, China; 5.Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing; 100190, China; 6.Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge; TN; 37831, United States; 7.Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institut, Villigen; CH-5232, Switzerland; 8.School of Physics and Electronics, Hunan University, Changsha; 410082, China; 9.Institute of Physics, Ecole Polytechnique Federale de Lausanne (EPFL), Lausanne; CH-1015, Switzerland; 10.ASTAR Quantum Innovation Centre (Q.InC), Institute of Materials Research and Engineering (IMRE), Agency for Science Technology and Research (ASTAR), 2 Fusionopolis Way, 138634, Singapore; 11.Analytical Instrumentation Center, School of Physical Science and Technology, ShanghaiTech University, Shanghai; 201210, China; 12.ShanghaiTech Laboratory for Topological Physics, ShanghaiTech University, Shanghai; 201210, China
第一作者单位	物质科学与技术学院
通讯作者单位	物质科学与技术学院; 上海科技大学
第一作者的第一单位	物质科学与技术学院
推荐引用方式 GB/T 7714	Yu, Zhenhai,Zhou, Kaijuan,Hou, Xiaofei,et al. Noncentrosymmetric Nowotny Chimney Ladder Ferromagnet Cr4Ge7 with a High Curie Temperature of ∼207 K[J]. CHEMISTRY OF MATERIALS,2024.
APA	Yu, Zhenhai.,Zhou, Kaijuan.,Hou, Xiaofei.,Chen, Xuejiao.,Tao, Zhen.,...&Guo, Yanfeng.(2024).Noncentrosymmetric Nowotny Chimney Ladder Ferromagnet Cr4Ge7 with a High Curie Temperature of ∼207 K.CHEMISTRY OF MATERIALS.
MLA	Yu, Zhenhai,et al."Noncentrosymmetric Nowotny Chimney Ladder Ferromagnet Cr4Ge7 with a High Curie Temperature of ∼207 K".CHEMISTRY OF MATERIALS (2024).