Abstract
The 3d-metal chromites ACr2O4 where A is a magnetic ion, show the paramagnetic to ferrimagnetic phase transition at TC while for non-magnetic A-site ion, ACr2O4 show paramagnetic to antiferromagnetic phase transition at TN. In this report, we present the detailed study of magnetic and the magnetocaloric effect (MCE) of the 3d-metal chromites ACr2O4 (where A = Mn, Fe, Co, Ni, Cu, and Zn) near TC and TN. We find the magnitude of MCE (-ΔSM) decreases on decreasing the magnetic moment of A-site ion with an exception for CuCr2O4. Additionally, to know more about the order and nature of phase transition, we have made a scaling analysis of (-ΔSM) for all the chromites across the phase transition temperatures TC and TN.
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