Фазовые равновесия и кристаллическая структура перовскитоподобных оксидов в системе Sm-Sr-Fe-Co-O

Abstract

The samples Sr1-xSmxFe1-yCoyO3-δ were synthesized by solid-state and glycerin nitrate techniques. XRD patterns of the single phase samples were refined by Rietveld method within the cubic structure (Pm3m sp. gr.) or within the tetragonal structure (I4/mmm sp. gr.). It was found, that gradual substitution of strontium by samarium leads to the decrease of unit cell parameters and unit cell volume, that can be explained by the relative cation. The projections of isothermal–isobaric phase diagrams for the SmCoO3 - SmFeO3 - SrCoO3 -SrFeO3 system to the compositional square of metallic components was presented.