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Large magnetocaloric effect in van der Waals crystal CrBr3

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Abstract

We study the magnetocaloric effect (MCE) in van der Waals (vdW) crystal CrBr3. Bulk CrBr3 exhibits a second-order paramagnetic-ferromagnetic phase transition with TC = 33 K. The maximum magnetic entropy change −ΔSM near TC is about 7.2 J·kg−1·K−1 with the maximum adiabatic temperature change ΔTmaxad = 2.37 K and the relative cooling power RCP = 191.5 J·kg−1 at μ0H = 5 T, all of which are remarkably larger than those in CrI3. These results suggest that the vdW crystal CrBr3 is a promising candidate for the low-dimensional magnetic refrigeration in low temperature region.

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Acknowledgements

This work was supported by the Ministry of Science and Technology of China (No. 2016YFA0300504); the National Natural Science Foundation of China (Nos. 11574394, 11774423, and 11822412); the Research Funds of Renmin University of China (RUC) (Nos. 15XNLF06, 15XNLQ07, and 18XNLG14); the Fundamental Research Funds for the Central Universities (No. 2017RC20); the Research Innovation Fund for College Students of Beijing University of Posts and Telecommunications; and the Collaborative Research Project of Laboratory for Materials and Structures, Institute of Innovative Research, Tokyo Institute of Technology. H. H. was supported by the MEXT Elements Strategy Initiative to Form Core Research Center.

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Authors and Affiliations

  1. State Key Laboratory of Information Photonics and Optical Communications & School of Science, Beijing University of Posts and Telecommunications, Beijing, 100876, China

    Xiaoyun Yu, Xiao Zhang, Qi Shi & Kun Xu

  2. Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials & Micro-nano Devices, Renmin University of China, Beijing, 100872, China

    Shangjie Tian & Hechang Lei

  3. Materials Research Center for Element Strategy, Tokyo Institute of Technology (MCES), Yokohama, Kanagawa, 226-8503, Japan

    Hideo Hosono

  4. Materials and Structures Laboratory, Tokyo Institute of Technology, Yokohama, Kanagawa, 226-8503, Japan

    Hideo Hosono

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  1. Xiaoyun Yu
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  2. Xiao Zhang
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  3. Qi Shi
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Correspondence to Xiao Zhang or Hechang Lei.

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Yu, X., Zhang, X., Shi, Q. et al. Large magnetocaloric effect in van der Waals crystal CrBr3. Front. Phys. 14, 43501 (2019). https://doi.org/10.1007/s11467-019-0883-6

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  • DOI: https://doi.org/10.1007/s11467-019-0883-6

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