期刊
NATURE ELECTRONICS
卷 5, 期 4, 页码 224-232出版社
NATURE PORTFOLIO
DOI: 10.1038/s41928-022-00754-6
关键词
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资金
- National Research Foundation Singapore [NRF-CRP22-2019-0004, NRF-CRP22-2019-0007, NRF-CRP21-2018-0007]
- Ministry of Education, Singapore, under its AcRF Tier 3 Programme 'Geometrical Quantum Materials' [MOE2018-T3-1-002]
- AcRF Tier 1 [RG161/19]
- National Natural Science Foundation of China [11974156, 62174013]
- Guangdong International Science Collaboration Project [2019A050510001]
- Guangdong Innovative and Entrepreneurial Research Team Program [2019ZT08C044]
- Shenzhen Science and Technology Program [KQTD20190929173815000, 20200925161102001]
- Science, Technology and Innovation Commission of Shenzhen Municipality [ZDSYS20190902092905285]
- Presidential fund and Development and Reform Commission of Shenzhen Municipality
- Beijing Institute of Technology [2021CX11013]
Cr5Te8 flakes with strong ferromagnetism and unique magnetotransport properties can be grown using chemical vapour deposition.
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 omega(-1) cm(-1) and anomalous Hall angle of 5%. Few-nanometre-thick flakes of trigonal and monoclinic Cr5Te8 can be grown using chemical vapour deposition, with the monoclinic phase exhibiting an anomalous Hall conductivity of 650 omega(-1) cm(-1) and anomalous Hall angle of 5%.
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