Atom States and Interatomic Interactions in Complex Perovskite-like Oxides:XX.Origin of Electron-Ionic Conductivity in Lanthanum Gallates Doped with Strontium and Chromium

摘要

Magnetic susceptibilities and electric conductivities of solid solutions based on lanthanum gallate containing chromium and strontium atoms in the ratio of 10:2 were studied.It was shown that no partial oxidation of chromium to Cr(IV) occurs when lanthanum gallate is doped with chromium and strontium simultaneously,whereas the ionic conductivity is associated with the appearance of vacancies stabilized by chromium atoms in the oxygen sublattice.