The Magnetic and Magnetocaloric Properties of Pr1−x Bi x MnO3 (x = 0.2 and 0.4) Manganites
| Autor: | K. Sbissi, M. Ellouze, M. L. Kahn, F. Elhalouani, E.K. Hlil |
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| Přispěvatelé: | Université de Sfax - University of Sfax, Laboratoire de chimie de coordination (LCC), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie de Toulouse (ICT-FR 2599), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), 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 Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF) |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
[PHYS]Physics [physics]
Magnetic measurements Materials science Condensed matter physics 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Nanocrystalline material Isothermal process Electronic Optical and Magnetic Materials Magnetic field Condensed Matter::Materials Science Magnetization Low magnetic field 0103 physical sciences Magnetic refrigeration 010306 general physics 0210 nano-technology |
| Zdroj: | Journal of Superconductivity and Novel Magnetism Journal of Superconductivity and Novel Magnetism, Springer Verlag, 2015, 28 (5), pp.1433-1438. ⟨10.1007/s10948-015-2985-x⟩ |
| ISSN: | 1557-1939 1557-1947 |
| Popis: | The magnetic and magnetocaloric properties of Pr1−x Bi x MnO3 (x = 0.2 and 0.4) nanocrystalline manganites have been studied systematically. Samples were prepared using the Pechini sol–gel method. The variation of the magnetization as a function of temperature and applied magnetic field were carried out. Magnetic measurements show that all the materials exhibit a paramagnetic–ferromagnetic transition when the temperature decreases. Magnetocaloric effect has been calculated in terms of isothermal magnetic entropy change. A large magnetocaloric effect has been observed, the maximum entropy change, ${\Delta S}_{\mathrm {M}}^{\text {max}}$ ¦reaches 0.7 and 2.1 J kg−1 K−1 under a magnetic applied field of 5 T with an RCP values of 183 J kg−1 for Pr0.8Bi0.2MnO3 sample. These perovskites have the large magnetic entropy changes induced by low magnetic field change, which is beneficial for the household application of active magnetic refrigerant (AMR) materials. |
| Databáze: | OpenAIRE |
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