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Enhancement of the Magnetocaloric Effect in Composites Based on La0.4Re0.1Ca0.5MnO3 (Re = Dy, Gd, and Eu) Polycrystalline Manganites

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Abstract

In this communication, we have used theoretical calculations in order to prepare a composite with an enhanced magnetocaloric effect from La0.4Re0.1Ca0.5MnO3 (Re = Dy, Gd, and Eu) samples. Although the obtained composites did not exhibit very important values of magnetic entropy change (− ΔS), they are active in a very wide temperature range. One of the composites is characterized by a plateau-like shape of − ΔS(T) curves. Several anomalies were found in the magnetic and the magnetocaloric properties of our composites. The origin of these anomalies is essentially attributed to the phase separation phenomenon characterizing all the La0.4Re0.1Ca0.5MnO3 samples.

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Authors and Affiliations

  1. Laboratoire de Physique des Matériaux, Faculté des Sciences de Sfax, Université de Sfax, B. P. 1171, 3000, Sfax, Tunisia

    A. Krichene & W. Boujelben

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  1. A. Krichene
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  2. W. Boujelben
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Correspondence to A. Krichene.

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Krichene, A., Boujelben, W. Enhancement of the Magnetocaloric Effect in Composites Based on La0.4Re0.1Ca0.5MnO3 (Re = Dy, Gd, and Eu) Polycrystalline Manganites. J Supercond Nov Magn 31, 577–582 (2018). https://doi.org/10.1007/s10948-017-4252-9

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  • DOI: https://doi.org/10.1007/s10948-017-4252-9

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