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Article Dans Une Revue Acta Materialia Année : 2022

“Two-steps” process in the first-order transformation of giant magnetocaloric materials

Résumé

The most promising materials for applications in magnetic refrigeration exhibit a large entropy change at a first-order ferromagnetic transition. Often, it has been observed that the transformation proceeds via two bursts surrounding a regime of slow transformation. Within a simplified framework, the present article reports on a thermodynamic model able to account for this “two-steps” response. This model is confronted to magnetic and calorimetric data recorded in the magnetocaloric compound LaFe11.4Si1.31Co0.29 .
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hal-03874655 , version 1 (29-11-2022)

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Paternité - Pas d'utilisation commerciale - Pas de modification

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Vincent Hardy, Radia Hamane, Francis Veillon, Michel Risser, François Guillou. “Two-steps” process in the first-order transformation of giant magnetocaloric materials. Acta Materialia, 2022, 231, pp.117869. ⟨10.1016/j.actamat.2022.117869⟩. ⟨hal-03874655⟩
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