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Perovskites are mixed oxides with the general formula ABO3. Many differentcompositions have been found to be possible and their number is growing rapidlydue to their characteristics that make them ideal for various applications,such as fabrication of cathodes for solid oxide fuel cells (SOFCs). Oxidepowders of LaxSr1-xCo1-y-zFeyMnzO3-{\delta} (x=0.4, 0.6, 0.8, y=0.4, 0.8 andz=0.1, 0.2), named LSCFM, were prepared by mixing commercial powders. Thepowders have been investigated as a function of the stoichiometry and thecrystal structure parameters have been determined using Rietveld analysis. Theresults of the structural analysis for each sintered sample, at low temperaturesintering (1100 {\omicron}C), have been obtained by considering two cubicperovskite phases, for x=0.4 or one cubic and one orthorhombic phase for x=0.6,0.8, respectively. Analysis of microstructure has shown a maximum grain size of~0.63 {\mu}m. The annealed sample at 1100 {\omicron}C, an almost single phasespecimen, exhibited an electrical conductivity of 1.29\times103 ({\Omega} \cdotcm)-1. The sintered sample at 1250 {\omicron}C has higher conductivity butsharper curve close to the maximum. We suggest that low temperature sinteringreveal two phase system with broader curve maximum and high conductivity forfuture applications in SOFCs.

Synthesis, Structural, Electrical and Microchemistry Properties of Novel  (LSCFM) LaxSr1-xCo1-y-zFeyMnzO3-{\delta} (x=0.4, 0.6, 0.8, y=0.4, 0.8 and  z=0.1, 0.2) Perovskites for SOFC Applications