Engineered Gd-Co based multilayer stack to enhanced magneto-caloric effect and relative cooling power - Université de Lorraine Accéder directement au contenu
Article Dans Une Revue Journal of Applied Physics Année : 2018

Engineered Gd-Co based multilayer stack to enhanced magneto-caloric effect and relative cooling power

Résumé

Magnetic refrigeration based on the magneto-caloric effect is one of the best alternatives to compete with vapor-compression technology. The viability of a magnetic refrigeration system for magnetic cooling can be tested by exploiting the materials in various forms, ranging from bulk to nanostructured materials. In order to achieve a wide refrigerating temperature range in magnetic refrigeration, we study in this paper a 100 nm-thick Gd-Co alloys-based multilayer stack. The stack is made of four individual Gd-Co alloy layers with different values of concentration and Curie temperature (TC). A magnetic entropy change associated with the second-order magnetic phase transition was determined from the magnetic isotherms. Moreover, the relative cooling power (RCP) of the studied Gd-Co-based multilayer is enhanced compared to the one of bulk Gd, and reaches a value of 200 J/kg. Such an enhancement of the RCP is not due to an enhanced maximum variation of entropy, but this is due to a much broader magnetic entropy peak. This study demonstrates the potential of nanostructured Gd-Co multilayer stack for magnetic cooling applications.
Fichier principal
Vignette du fichier
18 JAP Tadout.pdf (1.42 Mo) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-02011592 , version 1 (08-02-2019)

Identifiants

Citer

M Tadout, C.-H Lambert, O Hadri, A Mounkachi, M Benyoussef, et al.. Engineered Gd-Co based multilayer stack to enhanced magneto-caloric effect and relative cooling power. Journal of Applied Physics, 2018, 123, pp.053902. ⟨10.1063/1.5004712⟩. ⟨hal-02011592⟩
46 Consultations
157 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More