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A comparative study of the structural, magnetic and magnetocaloric properties in Pr0.6La0.1M0.3MnO3 manganites (M = Ca, Ba and Mg)

Abstract : The Comparaison of the structural, magnetic and magnetocaloric properties of Pr0.6La0.1M0.3MnO3 (M = Ca, Ba and Mg) compounds have been studied using X-ray diffraction (XRD) and magnetic measurements. Our compounds have been prepared using the Sol-Gel method reaction at room temperature. Rietveld refinements of the X-ray diffraction patterns reveal that our compounds are single phase and crystallize in the orthorhombic system with Pnma space group. Magnetization measurements versus temperature in a magnetic applied field of 0.05T indicate that samples display a ferromagnetic (FM) - paramagnetic (PM) transition with increasing temperature. The Curie temperature TC is found to be 94 K, 39 K and 64 K for M = Ca, Ba and Mg, respectively. From the magnetization data as a function of magnetic applied field, we have determined the associated magnetic entropy change, the maximum of the magnetic entropy ǀ ǀ and the relative cooling power (RCP) for Pr0.6La0.1M0.3MnO3 (M = Ca, Ba and Mg) compounds. In the vicinity of TC and in a magnetic applied field of 2 T, ǀ ǀ reached, the values of 0.87 J/kg K, 1.43 J/kg K and 0.79 J/kg K for M = Ca, Ba and Mg, respectively.
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https://hal.archives-ouvertes.fr/hal-01936038
Contributor : Marie-Hélène Gulli <>
Submitted on : Tuesday, November 27, 2018 - 11:21:06 AM
Last modification on : Friday, December 18, 2020 - 2:35:45 PM

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S. Zouari, E. K. Hlil, Myrtil Kahn, M. Ellouze, F. Elhalouani. A comparative study of the structural, magnetic and magnetocaloric properties in Pr0.6La0.1M0.3MnO3 manganites (M = Ca, Ba and Mg). Journal of New Technology and Materials, Université Larbi Ben Mhidi de Oum El Bouaghi, 2016, 6 (2), pp.19-23. ⟨10.12816/0043928⟩. ⟨hal-01936038⟩

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