Electrical conductivity and thermal expansion of La1 – xSrxFe1 – yGayO3 – δ (x = 0.2–0.5; y = 0–0.4)

Abstract

Lanthanum–strontium gallate–ferrites are thought of as perspective electrode materials. A series of La_{1 –x}Sr_xFe_{1 –y}Ga_yO_{3 – 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.