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Effet du cycle thermique sur les propriétés magnétocaloriques de l’alliage Fe48Rh52.

The effect of thermal cycling on magnetocaloric properties of Fe48Rh52 alloy.

Numéro : 0017

Auteurs : KAMANTSEV A., GAMZATOV A., ALIEV A.

Résumé

The effect of thermal cycling on the magnetic and magnetocaloric properties of the Fe48Rh52 alloy was studied. It was found that the 2000 cycles of rapid heating/cooling through the temperatures of the metamagnetic isostructural phase transition (PT) leads to the decrease of the magnetocaloric effect (MCE) value and the shift of the MCE‘s peak down to low temperatures. The maximum MCE value is ΔTad = -7.4 К at Tpeak = 308.7 K in the magnetic field of 1.8 T before thermal cycling, and both the absolute MCE value and the peak temperature decrease on 0.5 K after thermal cycling. The temperature dependence of ΔTad shows a deviation from a monotonic change. The special thermal procedure was performed after thermal cycling and then the magnetization and the MCE value were measured again. The repeated measurements showed that the original properties of the Fe48Rh52 alloy completely recovered.
 

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Pages : 6

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Détails

  • Titre original : The effect of thermal cycling on magnetocaloric properties of Fe48Rh52 alloy.
  • Identifiant de la fiche : 30032625
  • Langues : Anglais
  • Sujet : Technologie
  • Source : 10th IIR Conference on Caloric Cooling and Applications of Caloric Materials
  • Date d'édition : 24/08/2024
  • DOI : http://dx.doi.org/10.18462/iir.thermag.2024.0017

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