Low field magnetocaloric effect in the double perovskite Sr2CrMoO6: Monte Carlo simulation

Magnetocaloric effect (MCE) in double perovskite (DP) Sr2CrMoO6 has been investigated for low magnetic field change by using a Monte Carlo Simulation (MCS) in the framework of Ising model. Total magnetization and thermal derivative of the magnetization have been investigated. Magnetic entropy change has shown a significant extension around the transition temperature which is primordial for magnetic refrigeration. At transition temperature (T-C) equal to 458K, the maximum of magnetic entropy change, the adiabatic temperature change and the Relative Cooling Power (RCP) have shown an increase from 1.427 to 2.582J.Kg(-1) K-1, from 5.43 to 8.71 K, and from 18.33 to 28.62J.kg(-1), respectively, for magnetic field changes 1000e and 7000e, which is large for low magnetic field compared to other magnetocaloric materials. The Large MCE at low-field makes Sr2CrMoO6 a very promising candidate for magnetic refrigeration above room temperature. (c) 2017 Elsevier B.V. All rights reserved.