Near room-temperature ferromagnetism in air-stable two-dimensional Cr1−xTe grown by chemical vapor deposition
| Autor: | Yaping Du, Feng Luo, Jinxiong Wu, Zheshan Zhang, Xinyue Dong, Jiabiao Chen, Linglu Wu, Junwei Huang, Zhansheng Gao, Lei Zhang, Yifei Ma, Hongtao Yuan, Wei Ai, Ming Tang, Huixia Fu |
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| Rok vydání: | 2021 |
| Předmět: |
Work (thermodynamics)
Materials science Spintronics Condensed matter physics Chemical vapor deposition Condensed Matter Physics Atomic and Molecular Physics and Optics Ferromagnetism Hall effect Surface roughness Curie temperature General Materials Science Electrical and Electronic Engineering Ferromagnetic order |
| Zdroj: | Nano Research. 15:3763-3769 |
| ISSN: | 1998-0000 1998-0124 |
| DOI: | 10.1007/s12274-021-3909-7 |
| Popis: | Identifying air-stable two-dimensional (2D) ferromagnetism with high Curie temperature (Tc) is highly desirable for its potential applications in next-generation spintronics. However, most of the work reported so far mainly focuses on promoting one specific key factor of 2D ferromagnetism (Tc or air stability), rather than comprehensive promotion of both of them. Herein, ultrathin Cr1−xTe crystals grown by chemical vapor deposition (CVD) show thickness-dependent Tc up to 285 K. The out-of-plane ferromagnetic order is well preserved down to atomically thin limit (2.0 nm), as evidenced by anomalous Hall effect observed in non-encapsulated samples. Besides, the CVD-grown Cr1−xTe nanosheets present excellent ambient stability, with no apparent change in surface roughness or electrical transport properties after exposure to air for months. Our work provides an alternative platform for investigation of intrinsic 2D ferromagnetism and development of innovative spintronic devices. |
| Databáze: | OpenAIRE |
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