Validity of the phenomenological model for magnetocaloric effects in MnFeP2/3Si1/3
Ahmed Rida Galaly, Tahani R. Aldhafeeri, Sameh M. Elghnam, Mahmoud A. Hamad
Abstract
• The phenomenological model-(PM) for the magnetocaloric effect-(MCE) in MnFeP 2/3 Si 1/3 is validated. • There is a good the agreement between the simulated magnetic entropy change (10.1 J/kg.K) and the reported one. • Additionally, MnFeP 2/3 Si 1/3 ′s relative cooling power is evaluated to be 97 J/kg. • PM is a trustworthy model for investigating MCE in the sharp magnetic transition. Assessing the validity of the phenomenological model (PM) for the magnetocaloric effect (MCE) in MnFeP 2/3 Si 1/3 is the aim of this study. Our work confirms PM for conventional MCE by simulating the MCE of MnFeP 2/3 Si 1/3 at temperatures between 230 K and 310 K. Interestingly, there is a good degree of precision across the whole temperature range in the agreement between the simulated magnetic entropy change (10.1 J/kg.K) and the reported one. Additionally, MnFeP 2/3 Si 1/3 ′s relative cooling power is evaluated to be 97 J/kg, and heat capacity change characterization is investigated. By reducing the time and effort required to calculate and measure MCE, these results imply that PM is a trustworthy model for investigating MCE in the sharp magnetic transition. Consequently, the PM is very useful for estimating the MCE of magnets, as the MnFeP 2/3 Si 1/3 sample has a sharp magnetic transition. Consequently, we believe that the PM can also be used for predicting MCE parameters for any magnetic transition.