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.
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Hamdi, R., Khelifi, J., Walha, I. et al. 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. J Supercond Nov Magn 32, 3679–3690 (2019). https://doi.org/10.1007/s10948-019-5142-0
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DOI: https://doi.org/10.1007/s10948-019-5142-0