Physical properties of La0.7Ca0.2Sr0.1MnO3 manganite: a comparison between sol–gel and solid state process

  • A. Ezaami
  • N. Ouled Nasser
  • W. Cheikhrouhou-Koubaa
  • M. Koubaa
  • A. Cheikhrouhou
  • E. K. Hlil


We have synthesized La0.7Ca0.2Sr0.1MnO3 sample using two different methods: the solid-state reaction (S1) and the sol–gel process (S2). Structural, morphological, infrared and magnetic properties were investigated by X-ray diffraction, scanning electron microscopy, Spectrum Two FT-IR Spectrometer and vibrating sample magnetometer. Despite the various conditions employed in the elaboration, the crystallographic study shows that our samples are single phase and crystallize in orthorhombic system with Pnma space group. A small difference appears in the microstructural and magnetic properties. The Curie temperature TC is found to be 308–256 K for S1 and S2 respectively. A large magnetocaloric effect has been observed in both samples, besides; the relative cooling power for S2 is bigger than S1. It attains exactly 250.75 J kg−1 under a magnetic applied field of 5 T. These results show that the elaboration process has an important impact on the magnetic and magnetocaloric properties. Furthermore, the importance of the magnetoelastic coupling and electron interaction in the magnetocaloric properties of manganite was confirmed by the analysis of Landau theory.


Manganite Magnetic Applied Field Magnetocaloric Effect Magnetic Entropy Change Landau Theory 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



This work has been supported by the Tunisian Ministry of Higher Education, Scientific Research and Information and Communication Technology.


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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  • A. Ezaami
    • 1
    • 2
  • N. Ouled Nasser
    • 1
  • W. Cheikhrouhou-Koubaa
    • 1
    • 2
  • M. Koubaa
    • 1
  • A. Cheikhrouhou
    • 1
  • E. K. Hlil
    • 3
  1. 1.Materials Physics Laboratory, Faculty of Sciences of SfaxSfax UniversitySfaxTunisia
  2. 2.Digital Research CenterSfax TechnoparkSakiet-ezzitTunisia
  3. 3.Institut Néel, CNRS et Université Joseph FourierGrenoble Cedex 9France

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