Synthetic Approach for (Mn,Fe)2(Si,P) Magnetocaloric Materials: Purity, Structural, Magnetic, and Magnetocaloric Properties

A conventional solid-state approach has been developed for the synthesis of phase-pure magnetocaloric Mn_2-xFe_xSi_0.5P_0.5 materials (x = 0.6, 0.7, 0.8, 0.9). Annealing at high temperatures followed by dwelling at lower temperatures is essential to obtain pure samples with x = 0.7, 0.8, and 0.9. Structural features of the samples with x = 0.6 and 0.9 were analyzed as a function of temperature via synchrotron powder diffraction. The Curie …