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- Title
Magneto-Caloric Effect Simulated by Landau Theory in Amorphous Fe<sub>28</sub>Y<sub>52</sub>B<sub>20</sub> Alloy.
- Authors
El Ouahbi, S.
- 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.
- Subjects
MAGNETOCALORIC effects; LANDAU theory; MAGNETIC transitions; MELT spinning; MAGNETIC declination; MAGNETIC entropy
- Publication
Journal of Superconductivity & Novel Magnetism, 2022, Vol 35, Issue 10, p2859
- ISSN
1557-1939
- Publication type
Article
- DOI
10.1007/s10948-022-06325-2