Фазовые равновесия, кристаллическая структура, кислородная нестехиометрия и термическое расширение сложных оксидов, образующихся в системе Nd–Sr–Fe–O

Abstract

The phase equilibria in the Nd-Sr-Fe-O system were systematically studied at 1373 K in air. The homogeneity ranges and crystal structure of the solid solutions were determined by X-ray diffraction analysis. The changes of oxygen content in the solid solutions versus temperature in air were determined by thermogravimetric analysis. The average thermal expansion coefficients for the Nd1-xSrxFeO3- (0.6x0.8) samples were calculated within the temperature range 298-1373 K in air.