15 research outputs found
Effect of chromium concentration on the structural, magnetic and electrical properties of praseodymium-calcium manganite
3D-Ising ferromagnetic characteristics and magnetocaloric study in Pr0.4Eu0.2Sr0.4MnO3 manganite
International audienc
Magnetic entropy table-like shape and enhancement of refrigerant capacity in La1.4Ca1.6 Mn2O7 –La1.3Eu0.1Ca1.6Mn2O7 composite
International audienc
Critical behavior and magnetocaloric study in La 0.6 Sr 0.4 CoO 3 cobaltite prepared by a sol–gel process
International audienc
Composition dependence of physical properties in Pr 0.7 Ca 0.3 Mn 1−x Ni x O 3
International audienc
Analysis based on scaling relations of critical behaviour at PM–FM phase transition and universal curve of magnetocaloric effect in selected Ag-doped manganites
International audienc
Magnetic and magnetocaloric properties of La<sub>0.55</sub>Bi<sub>0.05</sub>Sr<sub>0.4</sub>CoO<sub>3</sub> and their implementation in critical behaviour study and spontaneous magnetization estimation
In this work, we present the results of the magnetic, critical, and magnetocaloric properties of the rhombohedral-structured La 0.55 Bi 0.05 Sr 0.4 CoO 3 cobaltite. Based on the modified Arrott plot, Kouvel-Fisher, and critical isotherm analyses, we obtained the values of critical exponents (b, g, and d) as well as Curie temperature (T C) for the investigated compound. These components were consistent with their corresponding values and they were validated by the Widom scaling law and scaling theory. The obtained critical exponents were close to the theoretical prediction of the mean-field model values, revealing the characteristic of long-range ferromagnetic interactions. The magnetic entropy, heat capacity, and local exponent n(T, m 0 H) of the La 0.55 Bi 0.05 Sr 0.4 CoO 3 compound collapsed to a single universal curve, confirming its universal behaviour. The estimated spontaneous magnetization value extracted through the analysis of the magnetic entropy change was consistent with that deduced through the classical extrapolation of the Arrott curves. Thus, the magnetic entropy change is a valid and useful approach to estimate the spontaneous magnetization of La 0.55 Bi 0.05 Sr 0.4 CoO 3
Effect of chromium concentration on the structural, magnetic and electrical properties of praseodymium-calcium manganite
International audienc
Effect of A-site deficiency on investigation of structural, magnetic and magnetocaloric behaviors for (LaSr)-lacunar manganites
International audienc
Study of physical properties of cobalt substituted Pr0.7Ca0.3MnO3 ceramics
International audienc