Abstract
The effect of Fe doping on the structural, magnetic, and magnetocaloric properties was studied on La0.8Sr0.2Mn1−xFexO3 (x = 0.00, 0.10, 0.15) manganites prepared by solid-state reaction method. Doping with iron did not change the original rhombohedral structure of the La0.8Sr0.2MnO3 compound but increased the unit cell parameters and microstrain of the crystal structure which was accounted for by the presence of a certain amount of Fe4+ ions. The samples showed a paramagnetic-ferromagnetic phase transition with the transition temperature decreasing with increasing iron content. In the paramagnetic temperature range, the formation of magnetic clusters was suggested from isothermal magnetization data. It was found that TC, the magnetic entropy change \(S_{M}^{\max }\), and the relative cooling power (RCP) decreased with increasing Fe content. RCP values were found to vary between 210 and 240 Jkg−1.
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The work was carried out according to the state assignment for IMET UB RAS using equipment of Collaborative usage center “Ural-M” and supported by Act 211 the Government of the Russian Federation, contract № 02.A03.21.0006.
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Estemirova, S.K., Mitrofanov, V.Y., Uporov, S.A. et al. Fe substitution for Mn in Rhombohedral La0.8Sr0.2Mn1−xFexO3 — the Structural, Magnetic, and Magnetocaloric Properties. J Supercond Nov Magn 35, 1251–1259 (2022). https://doi.org/10.1007/s10948-022-06188-7
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DOI: https://doi.org/10.1007/s10948-022-06188-7