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    • Keywords


      Perovskite manganites; magnetocaloric effect; Landau theory; phenomenological models.

    • Abstract


      In this study, the magnetic and magnetocaloric properties of a recently elaborated La$_{0.7}$Sr$_{0.3}$Mn$_{0.95}$Fe$_{0.05}$O$_3$ perovskite manganites have been modelled using different theoretical methods based on Landau theory and phenomenological models. The calculations were done by exploring the measurement data of magnetization vs. temperature at various low and high magnetic field values. The results confirmed that this compound has a magnetic phase transition of the second-order type from ferromagnetic to paramagnetic states at Curie temperature near the room temperature. The theoretical values of the magnetic entropy change (-${\Delta}$S$_M$) are estimated in low and high applied magnetic fields from these methods. The analysis of our obtained results of the relative cooling power indicated that this compound is a potential candidate material for magnetic refrigeration technology.

    • Author Affiliations



      1. Automatic Laboratory, A. Belkaid University, Box 119, 13000 Tlemcen, Algeria
      2. Solid State Physics Team, Theoretical Physics Laboratory, Faculty of Sciences, A. Belkaı¨d University, Box 119, 13000 Tlemcen, Algeria
      3. Faculty of Sciences of Sfax, LMEEM, Sfax University, B.P. 1171, 3000 Sfax, Tunisia
      4. Department of Physics, College of Science, King Faisal University, P.O. Box 400, Al-Ahsa 31982, Saudi Arabia
    • Dates

  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

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