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) Magnetization versus magnetic field (M–H) of Co_1−xCu_xCr₂S₄ (x = 0–0.8) measured on the applied magnetic field from 0 T to 5.0 T at 4 K. (b) The corresponding spontaneous magnetization derived from the extrapolation of the magnetization from high fields to H = 0 as a function of Cu concentration x and the number of Cu atoms per unit cell N_Cu. The red circle dots are experiment measured values by other researchers.^[15,25]