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Large magnetocaloric effect in van der Waals crystal CrBr3

查看全文 作　　者：Xiaoyun [1]Yu;Xiao [1]Zhang;Qi [1]Shi;Shangjie [2]Tian;Hechang [2]Lei;Kun [1]Xu;Hideo [3,4]Hosono 高影响力作者 机构地区：[1]State Key Laboratory of Information Photonics and Optical Communications & School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China;[2]Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials & Micro-nano Devices, Renmin University of China, Beijing 100872, China;[3]Materials Research Center for Element Strategy, Tokyo Institute of Technology (MCES), Yokohama, Kanagawa 226-8503, Japan;[4]Materials and Structures Laboratory, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8503, Japan高影响力机构 出　　处：《Frontiers of physics》索引2019年第14卷第4期,共5页高影响力期刊 基　　金：supported by the Minis try 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. 摘　　要：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-△SM near TC is about 7.2 J.kg-1.K-1 with the maximum adiabatic temperature change △Tadmax =2.37 K and the relative cooling power RCP =191.5 J.kg-1 at μoH =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. 关 键 词：magnetocalotic EFFECT 2D MAGNETIC MATERIALS
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