Abstract
The magneto-caloric effect simulated by the Landau theory and phenomenological model of amorphous Fe28Y52B20 alloy are thoroughly investigated. The amorphous alloy was formed using the melt spinning method. The magnetic transition nature follows a second-order magnetic phase transition (SOMT) from ferromagnetic to paramagnetic states at a TC (Curie temperature) = 20 K. The thermodynamic Maxwell relation and simulation by the Landau theory are used to compute the magnetic entropy variation (− ∆SM). Furthermore, we present a phenomenological model based on a theoretical evaluation of the magneto-caloric effect. The model parameters were determined, as well as their variations with temperature and magnetic field. Theoretical predictions were put to the test and found to be accurate when compared to experimental outcomes.
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El Ouahbi, S. Magneto-Caloric Effect Simulated by Landau Theory in Amorphous Fe28Y52B20 Alloy. J Supercond Nov Magn 35, 2859–2866 (2022). https://doi.org/10.1007/s10948-022-06325-2
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DOI: https://doi.org/10.1007/s10948-022-06325-2