Problems of electronic structure of electronic-ionic conductors based on doped lanthanum gallate

Magnetic properties of solid solutions based on lanthanum gallate doped with strontium and a transition element in the ratio 1: 5 were studied. Stabilization of these systems is not related to the oxidation of the transition element, rather it is determined by the formation of clusters from the transition element atoms including strontium atoms and vacancies in the oxygen sublattice. A model suggested for the explanation of electronic-ionic conductivity of doped lanthanum gallates allowed us to recommend gallates containing chromium and cobalt as materials for electrolytes and those containing nickel, for cathodes.