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Title: Phase engineering of Cr₅Te₈ with colossal anomalous Hall effect
Authors: Tang, Bijun
Wang, Xiaowei
Han, Mengjiao
Xu, Xiaodong
Zhang, Zhaowei
Zhu, Chao
Cao, Xun
Yang, Yumeng
Fu, Qundong
Yang, Jianqun
Li, Xingji
Gao, Weibo
Zhou, Jiadong
Lin, Junhao
Liu, Zheng
Keywords: Engineering::Materials::Magnetic materials
Engineering::Materials::Microelectronics and semiconductor materials::Thin films
Issue Date: 2022
Source: Tang, B., Wang, X., Han, M., Xu, X., Zhang, Z., Zhu, C., Cao, X., Yang, Y., Fu, Q., Yang, J., Li, X., Gao, W., Zhou, J., Lin, J. & Liu, Z. (2022). Phase engineering of Cr₅Te₈ with colossal anomalous Hall effect. Nature Electronics, 5(4), 224-232.
Project: NRF-CRP22-2019-0007
Journal: Nature Electronics
Abstract: Two-dimensional materials that are intrinsically ferromagnetic are crucial for the development of compact spintronic devices. However, most non-layered 2D magnets with a strong ferromagnetic order are difficult to synthesize. Here we show that the flakes of trigonal and monoclinic Cr5Te8 can be grown via a chemical vapour deposition method. Using magneto-optical and magnetotransport measurements, we show that both phases exhibit robust ferromagnetism with strong perpendicular anisotropy at thicknesses of a few nanometres. A high Curie temperature of up to 200 K can be obtained by manipulating the phase structure and thickness. We also observe a colossal anomalous Hall effect in the more structurally distorted monoclinic Cr5Te8, with an anomalous Hall conductivity of 650 Ω−1 cm−1 and anomalous Hall angle of 5%.
ISSN: 2520-1131
DOI: 10.1038/s41928-022-00754-6
Schools: School of Materials Science and Engineering 
School of Physical and Mathematical Sciences 
School of Electrical and Electronic Engineering 
Research Centres: CNRS International NTU THALES Research Alliances 
Rights: © 2022 The Author(s), under exclusive licence to Springer Nature Limited. All rights reserved. This paper was published in Nature Electronics and is made available with permission of The Author(s).
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles
MSE Journal Articles
SPMS Journal Articles

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