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Magnetocaloric effect simulation by Landau theory and mean-field approximation in Pr0.5Sr0.5MnO3

  • Mohamed HsiniEmail author
  • Sobhi Hcini
  • Sadok Zemni
Regular Article
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Abstract.

The magnetocaloric effect in Pr0.5Sr0.5MnO3 (PSMO) has been successfully modeled in this work. PSMO undergoes a first-order antiferromagnetic charge ordering (AFM/CO) to a ferromagnetic (FM) transition at \( T_{CO}=T_{N}\sim 165\) K followed by a second-order ferromagnetic (FM) to paramagnetic (PM) transition at the Curie temperature, \( T_{C}\sim 255\) K. The magnetocaloric effect in PSMO has been studied by the simulation of the magnetic entropy change \( (-\Delta S_M)\) for these two transitions by developing a numerical approach based on the Landau free energy within the mean-field approximation. Simulated results agree well with the experimental ones for these two transitions.

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© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Laboratory of Physical Chemistry of Materials, Faculty of Science of Monastir, Department of PhysicsUniversity of MonastirMonastirTunisia
  2. 2.Research unit of valorization and optimization of exploitation of resources, Faculty of Science and Technology of Sidi BouzidUniversity Campus Agricultural City, University of KairouanSidi BouzidTunisia

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