Electrical conductivity and thermal expansion of La1 – x Sr x Fe1 – y Ga y O3 – δ (x = 0.2–0.5; y = 0–0.4)

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Lanthanum–strontium gallate–ferrites are thought of as perspective electrode materials. A series of La1 –xSrxFe1 –yGayO3 – δ (x = 0.2–0.5; y = 0–0.4) compositions is synthesized by self-propagating high-temperature synthesis. The solid solutions’ existence domain is identified. The linear expansion thermal coefficient and the electric conductivity of the materials in the form of ceramics are studied for single-phase samples.