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Entropy change at magnetic phase transitions of the first order and second order.
Author(s) : BASSO V., SASSO C. P., KÜPFERLING M.
Type of article: Article, IJR article
Summary
Magnetocaloric properties close to first order and second order phase transitions are presented and discussed. The specific heat capacity as a function of the magnetic field and the magnetic field induced entropy change has been measured by direct heat flux calorimetry in Gd, hydrogenated La(Fe–Mn–Si)13, La(Fe–Co–Si)13 and the Heusler alloy Ni–Mn–Co–Sn. The resulting s(Ha,T) entropy constitutive relation is compared with a model including the ferromagnetic, electronic and structural contributions to the free energy.
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Details
- Original title: Entropy change at magnetic phase transitions of the first order and second order.
- Record ID : 30009904
- Languages: English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 37 - n. 1
- Publication date: 2014/01
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