Abstract
In this study, we investigated the effect of structural, magnetic, and magnetocaloric properties of La0.8Ca0.1Na0.1MnO3 (LCNMO) prepared using both the conventional solid-state method with a consolidation stage at 1000 ∘C and the well-known sol–gel method combined to a sintering treatment at 950 ∘C. Rietveld refinement of the X-ray diffraction patterns indicates a rhombohedral structure with R-3C space group in both cases. It was also found that the magnetocaloric properties of LCNMO are strongly depended on the synthesis technique. In fact, a global magnetization reduction and a decrease in paramagnetic-ferromagnetic (PM-FM) transition temperature (TC) associated to an enhancement of the relative cooling power were noticed in sol–gel synthesized sample making it more suitable for magnetic refrigeration applications.
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