Epitaxial growth and room-temperature ferromagnetism of quasi-2D layered Cr4Te5 thin film

doi:10.1088/1361-6463/ac47c2

	Epitaxial growth and room-temperature ferromagnetism of quasi-2D layered Cr4Te5 thin film
	Wang, Jing 2; Wang, Weiyuan 2; Fan, Jiyu 2,3; Zheng, Huan 2; Liu, Hao 2; Ma, Chunlan 1; Zhang, Lei 4; Tong, Wei 4; Ling, Langsheng 4; Zhu, Yan 2,3
刊名	JOURNAL OF PHYSICS D-APPLIED PHYSICS
	2022-04-21
卷号	55
关键词	van der Waals magnet epitaxial film 2D material Cr4Te5
ISSN号	0022-3727
DOI	10.1088/1361-6463/ac47c2
通讯作者	Fan, Jiyu(jiyufan@nuaa.edu.cn) ; Yang, Hao(yanghao@nuaa.edu.cn)
英文摘要	Large-scale growth of two-dimensional (2D) ferromagnetic thin films will provide an ideal platform for studying 2D magnetism and active spintronic devices. However, controllable growth of 2D ferromagnets over large areas faces tremendous challenges. Herein, we report a large-area growth of 2D ferromagnetic single-crystal thin films Cr4Te5 on Al2O3 (0001) substrates using pulsed laser deposition. X-ray diffraction patterns and atomic force microscopy detection confirm that all thin films have high quality epitaxy together with being atom-level smooth. Magnetic measurements show the persistence of ferromagnetic ordering state to above room temperature, with a Curie temperature similar to 320 K, atomic magnetic moment similar to 0.307 mu(B)/Cr, and the easy-magnetization axis in the film plane. Comparing with bulk Cr4Te5 single-crystal, the critical exponent beta = 0.491 indicates that the magnetic interactions of the thin film obey the mean-field model rather than the 3D Heisenberg model. This work will open an avenue for growing large-scale 2D ferromagnets and developing room temperature 2D magnet-based nanodevices.
资助项目	National Natural Science Foundation of China[11974181] ; National Natural Science Foundation of China[11774172] ; Top-notch Academic Programs Project of Jiangsu Higher Education Institutions (TAPP)
WOS关键词	MAGNETIC-PROPERTIES ; CR3TE4 ; CR2TE3 ; CRTE ; TE ; SE
WOS研究方向	Physics
语种	英语
出版者	IOP Publishing Ltd
WOS记录号	WOS:000746166700001
资助机构	National Natural Science Foundation of China ; Top-notch Academic Programs Project of Jiangsu Higher Education Institutions (TAPP)
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/127347]
专题	中国科学院合肥物质科学研究院
通讯作者	Fan, Jiyu; Yang, Hao
作者单位	1.Suzhou Univ Sci & Technol, Sch Phys Sci & Technol, Jiangsu Key Lab Micro & Nano Heat Fluid Flow Tech, Suzhou 215009, Peoples R China 2.Nanjing Univ Aeronaut & Astronaut, Dept Appl Phys, Nanjing 210016, Peoples R China 3.MILT, Key Lab Aerosp Informat Mat & Phys NUAA, Nanjing 211106, Peoples R China 4.Chinese Acad Sci, Anhui Key Lab Condensed Matter Phys Extreme Condi, High Magnet Field Lab, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Wang, Jing,Wang, Weiyuan,Fan, Jiyu,et al. Epitaxial growth and room-temperature ferromagnetism of quasi-2D layered Cr4Te5 thin film[J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS,2022,55.
APA	Wang, Jing.,Wang, Weiyuan.,Fan, Jiyu.,Zheng, Huan.,Liu, Hao.,...&Yang, Hao.(2022).Epitaxial growth and room-temperature ferromagnetism of quasi-2D layered Cr4Te5 thin film.JOURNAL OF PHYSICS D-APPLIED PHYSICS,55.
MLA	Wang, Jing,et al."Epitaxial growth and room-temperature ferromagnetism of quasi-2D layered Cr4Te5 thin film".JOURNAL OF PHYSICS D-APPLIED PHYSICS 55(2022).