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Special Issue:
Virtual Special Topic — Magnetism and Magnetic Materials
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| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Critical behavior and magnetocaloric effect in magnetic Weyl semimetal candidate Co2-xZrSn |
| Tianlin Yu(于天麟), Xiaoyun Yu(余骁昀), En Yang(杨恩), Chang Sun(孙畅), Xiao Zhang(张晓), Ming Lei(雷鸣) |
| State Key Laboratory of Information Photonics and Optical Communications & School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China |
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Abstract We investigate the critical exponents and magnetocaloric effect of Co2-xZrSn polycrystal. The Co2-xZrSn undergoes a second-order ferromagnetism phase transition around the Curie temperature of Tc~280 K. The critical behavior in the vicinity of the magnetic phase transition has been investigated by using modified Arrott plot and Kouvel-Fisher methods. The obtained critical exponents, β, γ, and δ can be well described by the scaling theory. The determined exponents of Co2-xZrSn obey the mean-field model with a long-range magnetic interaction. In addition, the maximum magnetic entropy change -ΔSMmax of Co2-xZrSn is about 0.57 J·kg-1·K-1 and the relative cooling power (RCP) is 14.68 J·kg-1 at 50 kOe (1 Oe=79.5775 A·m-1).
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Received: 22 February 2019
Revised: 29 March 2019
Accepted manuscript online:
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PACS:
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75.40.Cx
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(Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.))
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75.20.En
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(Metals and alloys)
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75.30.Sg
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(Magnetocaloric effect, magnetic cooling)
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75.50.Cc
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(Other ferromagnetic metals and alloys)
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| Fund: Project supported by the Fundamental Research Funds for the Central Universities (Grant No. 2017RC20) and the Research Innovation Fund for College Students of Beijing University of Posts and Telecommunications. |
Corresponding Authors:
Xiao Zhang, Ming Lei
E-mail: zhangxiaobupt@bupt.edu.cn;mlei@bupt.edu.cn
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Cite this article:
Tianlin Yu(于天麟), Xiaoyun Yu(余骁昀), En Yang(杨恩), Chang Sun(孙畅), Xiao Zhang(张晓), Ming Lei(雷鸣) Critical behavior and magnetocaloric effect in magnetic Weyl semimetal candidate Co2-xZrSn 2019 Chin. Phys. B 28 067501
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