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Title: Enhancement of the Magnetocaloric Effect in Composites Based on La{sub 0.4}Re{sub 0.1}Ca{sub 0.5}MnO{sub 3} (Re = Dy, Gd, and Eu) Polycrystalline Manganites

Abstract

In this communication, we have used theoretical calculations in order to prepare a composite with an enhanced magnetocaloric effect from La{sub 0.4}Re{sub 0.1}Ca{sub 0.5}MnO{sub 3} (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 La{sub 0.4}Re{sub 0.1}Ca{sub 0.5}MnO{sub 3} samples.

Authors:
;  [1]
  1. Université de Sfax, Laboratoire de Physique des Matériaux, Faculté des Sciences de Sfax (Tunisia)
Publication Date:
OSTI Identifier:
22774102
Resource Type:
Journal Article
Journal Name:
Journal of Superconductivity and Novel Magnetism
Additional Journal Information:
Journal Volume: 31; Journal Issue: 2; Other Information: Copyright (c) 2018 Springer Science+Business Media, LLC, part of Springer Nature; Article Copyright (c) 2017 Springer Science+Business Media, LLC; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1557-1939
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ENTROPY; LANTHANUM COMPLEXES; MAGNETIC PROPERTIES; POLYCRYSTALS; TEMPERATURE RANGE

Citation Formats

Krichene, A., E-mail: akramkri@hotmail.fr, and Boujelben, W.. Enhancement of the Magnetocaloric Effect in Composites Based on La{sub 0.4}Re{sub 0.1}Ca{sub 0.5}MnO{sub 3} (Re = Dy, Gd, and Eu) Polycrystalline Manganites. United States: N. p., 2018. Web. doi:10.1007/S10948-017-4252-9.
Krichene, A., E-mail: akramkri@hotmail.fr, & Boujelben, W.. Enhancement of the Magnetocaloric Effect in Composites Based on La{sub 0.4}Re{sub 0.1}Ca{sub 0.5}MnO{sub 3} (Re = Dy, Gd, and Eu) Polycrystalline Manganites. United States. doi:10.1007/S10948-017-4252-9.
Krichene, A., E-mail: akramkri@hotmail.fr, and Boujelben, W.. Thu . "Enhancement of the Magnetocaloric Effect in Composites Based on La{sub 0.4}Re{sub 0.1}Ca{sub 0.5}MnO{sub 3} (Re = Dy, Gd, and Eu) Polycrystalline Manganites". United States. doi:10.1007/S10948-017-4252-9.
@article{osti_22774102,
title = {Enhancement of the Magnetocaloric Effect in Composites Based on La{sub 0.4}Re{sub 0.1}Ca{sub 0.5}MnO{sub 3} (Re = Dy, Gd, and Eu) Polycrystalline Manganites},
author = {Krichene, A., E-mail: akramkri@hotmail.fr and Boujelben, W.},
abstractNote = {In this communication, we have used theoretical calculations in order to prepare a composite with an enhanced magnetocaloric effect from La{sub 0.4}Re{sub 0.1}Ca{sub 0.5}MnO{sub 3} (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 La{sub 0.4}Re{sub 0.1}Ca{sub 0.5}MnO{sub 3} samples.},
doi = {10.1007/S10948-017-4252-9},
journal = {Journal of Superconductivity and Novel Magnetism},
issn = {1557-1939},
number = 2,
volume = 31,
place = {United States},
year = {2018},
month = {2}
}