Синтез, кристаллическая структура и физико-химические свойства YBaFe2-xCuxO5+Δ

Abstract

According to the results of X-ray diffraction analysis the homogeneity range for the YBaFe Cu O 2-x x 5+ solid solutions at studied conditions (T = 1273 K, air) appears within 1.0≤х≤1.1. XRD pattern for all single phase samples were refined by Rietveld method within the tetragonal structure ар×ар×2ар (S.G. P4mm). The value of oxygen content for the sample YBaFeCuO 5+ obtained from the result of TGA reduction was equal to (5+δ) = 5.02 ± 0.01. Thermal expansion of YBaFeCuO 5+ remain linear within temperature range 298 – 1273 К.