LAUSR

Abstract The electronic, magnetic, and magnetocaloric properties of the intermetallic TbCu2Si2compound are studied. From Ab-initio calculations, we found that the magnetic moment and the exchange coupling interactions values are 5.93 μ B and J1 = 0.58 meV, J2 = -0.69 meV and J3 = 0.41 meV, respectively. On the other, the magnetic and magnetocaloric properties are calculated using Monte Carlo simulation based on the Ising model. The intermetallic TbCu2Si2compound exhibits a second-order antiferromagnetic-paramagnetic phase transition around TN 8K, as well as a large MCE has been obtained for different external magnetic field values. Besides, the maximum values of the magnetic entropy change (ΔSmag) and the relative cooling power (RCP) are found to be 40.78 J/Kg.K, 71.58 J/kg, respectively, at h = 2 T. Additionally, by increasing the magnetic field, it is shown that the maximum of ΔSmag increase widely and TN shifts to lower temperature.