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Phenomenological Modeling of Magnetocaloric Properties in 0.75La0.6Ca0.4MnO3/0.25La0.6Sr0.4MnO3 Nanocomposite Manganite

  • M. JeddiEmail author
  • H. Gharsallah
  • M. Bekri
  • E. Dhahri
  • E. K. Hlil
Article
  • 23 Downloads

Abstract

In the current research work, a phenomenological model is applied to describe the magnetocaloric effect (MCE) of the two phases 0.75 La0.6Ca0.4MnO3/0.25 La0.6Sr0.4MnO3 composite system. Based on this model, the values of the magnetocaloric properties are predicted from the calculation of magnetization as a function of temperature under different external magnetic fields. A significant MCE is obtained over a large range of temperature compared to those observed in the mother compounds, La0.6Ca0.4MnO3 and La0.6Sr0.4MnO3, making of this material considered as a promising candidate for magnetic refrigeration applications in moderate magnetic fields near room temperature. The results are then compared to those obtained experimentally in our previous work. The excellent agreement observed between both data proves the validity of the adopted model in the estimation of the MCE properties of material under investigation.

Keywords

Composite Phenomenological model Magnetocaloric effect Magnetic entropy change Relative cooling power 

Notes

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • M. Jeddi
    • 1
    Email author
  • H. Gharsallah
    • 1
    • 2
  • M. Bekri
    • 3
  • E. Dhahri
    • 1
  • E. K. Hlil
    • 4
  1. 1.Laboratoire de Physique Appliquée, Faculté des SciencesUniversité de SfaxSfaxTunisie
  2. 2.Institut Préparatoire aux Études d’Ingénieur de SfaxUniversité de SfaxSfaxTunisie
  3. 3.Physics Department, Rabigh College of Science and ArtKing Abdulaziz UniversityRabighSaudi Arabia
  4. 4.Institut NéelCNRS Université J. FourierGrenobleFrance

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