,Critical behavior and magnetocaloric effect in magnetic Weyl semimetal candidate Co2?x ZrSn

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We investigate the critical exponents and magnetocaloric effect of Co2?x ZrSn polycrystal. The Co2?x ZrSn 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, andδ can be well described by the scaling theory. The determined exponents of Co2?x ZrSn obey the mean-field model with a long-range magnetic interaction. In addition, the maximum magnetic entropy change??SmaxM 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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