Magnetic and Magnetocaloric Properties of 0.5Pr0.67Ba0.22Sr0.11Mn0.95Fe0.05O3/ 0.5Pr0.67Ba0.22Sr0.11Mn0.9Fe0.1O3 Composite

Khaled Snini; Mohamed Ellouze

doi:10.5281/zenodo.7465017

Authors

Khaled Snini Phd.and Member in the Laboratory of multifunctional Materials and Application (LMMA), Faculty of Sciences of Sfax (FSS), University of Sfax,Tunisia. https://orcid.org/0000-0001-7781-9741
Mohamed Ellouze University of Sfax https://orcid.org/0000-0002-5662-8572

DOI:

https://doi.org/10.5281/zenodo.7465017

Keywords:

Manganites, X-ray diffraction, Rietveld refinement, Magnetization, Relative cooling power

Abstract

In the present work, the magnetic and magnetocaloric properties of _0.5Pr_0.67Ba_0.22Sr_0.11Mn_0.95Fe_0.05O₃ /_0.5Pr_0.67Ba_0.22Sr_0.11Mn_0.9Fe_0.1O₃ (0.5PBSMF_0.05/0.5PBSMF_0.1) composite have been investigated. Our composite 0.5PBSMF_0.05/0.5PBSMF_0.1 has been synthesized using the solid–state reaction. X-ray diffraction (XRD) at room temperature has been used to carry out the structural properties. In order to investigate the magnetic and magnetocaloric properties of the samples, magnetization measurements dependence on temperature and magnetic field have been performed by using physical property measurement system. XRD results indicate that all our simples crystallized in the orthorhombic structure with Pnma space group. Magnetization measurements versus temperature for the composite reveal two magnetic transition temperatures associated to both manganites, which induces an enlargement of the magnetic entropy change peak. Based on Maxwell relation, the maximum magnetic entropy change () of the composite has been calculated as 1.18×10^-3 Jkg^-1K^-1, which corresponds to relative cooling power (RCP) about 17.8 Jkg⁻¹ under a magnetic field change of 5T.

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