Magnetocaloric Effect in SmNi2 Compound
| العنوان: | Magnetocaloric Effect in SmNi2 Compound |
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| المؤلفون: | Mohamed Saidi, S. Walha, K. Nouri, Lotfi Bessais, M. Jemmali |
| المساهمون: | Institut de Chimie et des Matériaux Paris-Est (ICMPE), Institut de Chimie du CNRS (INC)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), Institut des Sciences Chimiques de Rennes (ISCR), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Faculté des Sciences de Sfax, Université de Sfax - University of Sfax |
| المصدر: | Chemistry Africa Chemistry Africa, 2020, 3 (1), pp.111-118. ⟨10.1007/s42250-019-00095-6⟩ |
| بيانات النشر: | HAL CCSD, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Diffraction, [PHYS]Physics [physics], Materials science, Condensed matter physics, Intermetallic, Laves phase, Catalysis, Landau theory, Condensed Matter::Materials Science, Chemistry (miscellaneous), Vacancy defect, Magnetic refrigeration, Environmental Chemistry, Curie temperature, Physical and Theoretical Chemistry, Spectroscopy |
| الوصف: | The structure and magnetocaloric properties of SmNi2 intermetallic material has been studied by X-ray diffraction and magnetic measurements. Rietveld refinements and energy dispersive X-ray spectroscopy detector show that the SmNi2 intermetallic is single phase. This intermetallic adopts the MgCu2 structure type of cubic Laves phase (space group $$ Fd\bar{3}m $$) and stabilizes without vacancy in Sm site. The magnetic properties and the entropy change have been investigated by the magnetic measurements. The compound obeys to the second-order magnetic phase transition. The Curie temperature of SmNi2 is determined by the minima of dM/dT. The magnetocaloric effect has been estimated using two different approaches, the thermodynamic Maxwell’s relation and the Landau theory. These studies are discussed in terms of magnetocaloric effect (MCE). The maximum value of the magnetic entropy ($$ \Delta {\text{S}}_{\text{M}} $$) is equal to 1.82 J/kg K and the relative cooling power for SmNi2 is equal to 23.5 J/kg. Besides, the MCE analysis proves a contribution of the magnetoelastic coupling to the entropy change. |
| اللغة: | English |
| تدمد: | 2522-5758 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::42d96f28492617c5b51044df377ac28c https://hal.science/hal-03985904 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....42d96f28492617c5b51044df377ac28c |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 25225758 |
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