Magnetic properties and magnetocaloric effect of the Cr-based spinel sulfides Co1−xCuxCr2S4

Magnetic properties and magnetocaloric effect of the Cr-based spinel sulfides Co_1−xCu_xCr₂S₄

Zheng Xiao-Chao^{1, 2}, Li Xi-Yang², He Lun-Hua^{2, 3}, Zhang Shao-Ying^{2, 3}, Tang Ming-Hua^{4, ‡}, Wang Fang-Wei^{2, 3, †}

(color online) (a) Temperature dependence of magnetization of Co₁₋_xCu_xCr₂S₄ (x = 0, 0.2, 0.4, 0.6, 0.8) from 4 K to 400 K under an applied magnetic field of 500 Oe. (b) The linear relationship between the reduced magnetic phase transition temperature T_C and the Cu concentration x and the number of Cu atoms per unit cell N_Cu. The red open dots are experiment measured values by other researchers.^[16–18]