Article (Scientific journals)
Enhanced Magnetic and Magnetocaloric Properties of La0.45Nd0.25Sr0.3MnO3/CuO Composite
Fkhar, Lahcen; Lamouri, Rachida; Mahmoud, Abdelfattah et al.
2020In Journal of Superconductivity and Novel Magnetism
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Keywords :
La0.45Nd0.25Sr0.3MnO3/CuO pellet; composites; Magnetic properties; Magnetocaloric effect
Abstract :
[en] This work is devoted to investigating the magnetic and magnetocaloric properties of La0.45Nd0.25Sr0.3MnO3-CuO composite prepared by the solid-state reaction with various concentration of CuO (2 wt.%, 5 wt.%, and 10 wt.%). The X-ray diffraction (XRD) and the scanning electron microscopy (SEM) techniques were used to identify the obtained structural phases and microstructural morphologies in the prepared pellets. A second-order transition was observed with critical a temperature around 294 K for 2 wt.% and 10 wt.% and 321 K for 5 wt.% of the CuO phase in the composite. Magnetic entropy changes in La0.45Nd0.25Sr0.3MnO3-CuO composites were calculated using the Maxwell approximation around the magnetic transition. The highest values of magnetic entropy change were found for 5 wt.% of CuO in La0.45Nd0.25Sr0.3MnO3-CuO pellet composites which is attributed to the localization of the copper oxide in the grains boundaries of La0.45Nd0.25Sr0.3MnO3 perovskite.
Disciplines :
Physics
Author, co-author :
Fkhar, Lahcen
Lamouri, Rachida
Mahmoud, Abdelfattah  ;  Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Boschini, Frédéric ;  Université de Liège - ULiège > Plateforme APTIS
Hamedoun, Mohamed
Ez-Zahraouy, Hamid
Benyoussef, Abdel-ilah
Hlil, El-kebir
Ait Ali, Mustapha
Mounkachi, Omar
Language :
English
Title :
Enhanced Magnetic and Magnetocaloric Properties of La0.45Nd0.25Sr0.3MnO3/CuO Composite
Publication date :
09 May 2020
Journal title :
Journal of Superconductivity and Novel Magnetism
ISSN :
1557-1939
eISSN :
1557-1947
Publisher :
Springer, Germany
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
Academia 2015-1, RESIBATn° 1510399
Funders :
Région wallonne [BE]
Available on ORBi :
since 25 May 2020

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