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Strain-sensitive ferromagnetic two-dimensional Cr2Te3

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Abstract

Searching for room temperature magnetic two-dimensional (2D) materials is a charming goal, but the number of satisfied materials is tiny. Strain can introduce considerable deformation into the lattice structure of 2D materials, and thus significantly modulate their intrinsic properties. In this work, we demonstrated a remarkable strain-modulated magnetic properties in the chemical vapor deposited Cr2Te3 nanoflakes grown on mica substrate. We found the Curie temperature of Cr2Te3 nanoflakes can be positively and negatively modulated under tensile and compressive strain respectively, with a maximum varied value of ∼ 40 and −90 K, dependent on the thickness of samples. Besides, the coercive field of Cr2Te3 nanoflakes also showed a significant decrease under the applied strain, suggesting the decrease of exchange interaction or the change of the magnetization direction. This work suggests a promise to employ interfacial strain to accelerate the practical application of room temperature 2D magnetics.

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Acknowledgements

The authors want to thank the technical support from Analytical and Testing Center in Huazhong University of Science and Technology. This work was supported by National Nature Science Foundation of China (Nos. 51872100, 21825103 and 51727809), Hubei Provincial Natural Science Foundation of China (No. 2019CFA002), the Fundamental Research Funds for the Central University (Nos. 2019kfyRCPY059, 2019kfyXMBZ018 and 2020kfyXJJS050), and Foundation of Shenzhen Science and Technology Innovation Committee (No. JCYJ20180504170444967).

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Author notes

  1. Junchuan Zhong and Mingshan Wang contributed equally to this work.

Authors and Affiliations

  1. State Key Laboratory of Materials Processing and Die & Mould Technology, and School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China

    Junchuan Zhong, Teng Liu, Yinghe Zhao, Xiang Xu, Shasha Zhou, Lin Gan & Tianyou Zhai

  2. Wuhan National High Magnetic Field Center and Department of Physics, Huazhong University of Science and Technology, Wuhan, 430074, China

    Mingshan Wang & Junbo Han

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  1. Junchuan Zhong
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  2. Mingshan Wang
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  4. Yinghe Zhao
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  8. Lin Gan
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Correspondence to Junbo Han, Lin Gan or Tianyou Zhai.

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Zhong, J., Wang, M., Liu, T. et al. Strain-sensitive ferromagnetic two-dimensional Cr2Te3. Nano Res. 15, 1254–1259 (2022). https://doi.org/10.1007/s12274-021-3633-3

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  • DOI: https://doi.org/10.1007/s12274-021-3633-3

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