Abstract

Oxygen nonstoichiometry of La 1− x Sr x Co 1− y Me y O 3− δ (Me = Ni, Fe) has been studied as a function of temperature and oxygen partial pressure (1 to 10 −3 atm) by TGA. The defect structure of complex oxides was described within the point defects approach by fitting the parameters of theoretical equations log ( P O 2 ) = f ( δ ) to the set of experimental data. Partial molar enthalpy and partial molar entropy of oxygen in La 1− x Sr x Co 1− y Me y O 3− δ (Me = Ni, Fe) were calculated.

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