Study of magnetic transition and magnetic entropy changes of Pr0.6Sr0.4MnO3 and Pr0.6Sr0.4Mn0.9Fe0.1O3 compounds
| Autor: | F. Elhalouani, E.K. Hlil, Abir Nasri, Abdel-Fatah Lehlooh, M. Ellouze |
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| Přispěvatelé: | Magnétisme et Supraconductivité (MagSup ), Institut Néel (NEEL), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Laboratoire des Matériaux Ferroélectriques, Faculté des Sciences de Sfax, Université de Sfax - University of Sfax-Université de Sfax - University of Sfax, École Nationale d'Ingénieurs de Sfax | National School of Engineers of Sfax (ENIS) |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Physics
[PHYS]Physics [physics] Phase transition Condensed matter physics Maxwell theory General Physics and Astronomy 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences 7. Clean energy Landau theory Magnetic field Magnetization 0103 physical sciences Cooling power Curie temperature 010306 general physics 0210 nano-technology ComputingMilieux_MISCELLANEOUS Entropy (order and disorder) |
| Zdroj: | The European Physical Journal Plus The European Physical Journal Plus, Springer, 2016, 131 (4), pp.110. ⟨10.1140/epjp/i2016-16110-y⟩ |
| ISSN: | 2190-5444 |
| DOI: | 10.1140/epjp/i2016-16110-y⟩ |
| Popis: | In the present work, we analyze the magnetic transition and magnetic entropy change $ \vert\Delta S_{M}\vert$ of Pr0.6Sr0.4Mn1-x Fe x O3 samples. Using Arrott plots, we report that the phase transition for Pr0.6Sr0.4MnO3 sample is of second order, while the Pr0.6Sr0.4Mn0.9Fe0.1O3 sample exhibits a first-order magnetic phase transition. From the magnetization measurements at temperature close to the Curie temperature, the magnetic entropy change, $ \vert\Delta S_{M}\vert$ and the Relative Cooling Power (RCP) have been estimated. The maximum of magnetic entropy change $ \vert\Delta S_M^{\max}\vert$ reaches, under an applied magnetic field of 5T, 3.58 and 3.66J/kg K for Pr0.6Sr0.4MnO3 and Pr0.6Sr0.4Mn0.9Fe0.1O3, respectively. The RCP values have been estimated to 159.37 and 223.52J/kg. For both samples, the $ \vert\Delta S_{M}\vert$ values evaluated using the Maxwell theory were found in accordance with those calculated by the Landau theory. |
| Databáze: | OpenAIRE |
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