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Journal of Superconductivity and Novel Magnetism

, Volume 32, Issue 11, pp 3679–3690 | Cite as

Impact of Titanium Doping on Structural, Magnetic, and Magnetocaloric Properties and Order of Transition in La0.5Pr0.3Ba0.2Mn1-xTixO3 (x = 0.0 and 0.1) Manganite

  • Rafik HamdiEmail author
  • J. Khelifi
  • I. Walha
  • E. Dhahri
  • E. K. Hlil
Original Paper
  • 93 Downloads

Abstract

In this paper, we study the structural, magnetic, and magnetocaloric properties of the polycrystalline peroviskite manganites La0.5Pr0.3Ba0.2Mn1-xTixO3 with x = 0 and 0.1. Our samples were prepared by solid-state reaction method. The XRD study has been analyzed by Rietveld refinement technique. Both samples crystallize in the rhombohedral symmetry with R\( \overline{3} \)c space group. The second order of magnetic phase transition in all samples is confirmed by the Arrott analysis and the behavior of the master curve. Moreover, the magnetic entropy change ∆SM has been determined by the Maxwell relation, using phenomenological model and Landau theory. The relative cooling power (RCP) value under a magnetic field of 5 T is 236.29 J kg−1 for La0.5Pr0.3Ba0.2Mn0.9Ti0.1O3 sample which will be an interesting compound for application materials. Also, an agreement was found between the magnetic entropy change values calculated by Landau theory and those obtained using Maxwell relation above TC and a difference below it, for a magnetic field of 2 T.

Keywords

Structural Magnetocaloric effect Relative cooling power (RCP) Model Landau theory Universal curve 

Notes

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Copyright information

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

Authors and Affiliations

  • Rafik Hamdi
    • 1
    Email author
  • J. Khelifi
    • 2
  • I. Walha
    • 1
  • E. Dhahri
    • 1
  • E. K. Hlil
    • 3
  1. 1.Laboratory of Applied Physics, Faculty of Sciences of SfaxUniversity of SfaxSfaxTunisia
  2. 2.Research Unit of Valuation and Optimization of Resource, Faculty of Science and Technology of Sidi Bouzid, University Campus Agricultural CityUniversity of KairouanSidi BouzidTunisia
  3. 3.Institut NéelCNRS–Université J. FourierGrenobleFrance

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