The behaviour of solid solutions, La0.5+x+yLi0.5-3xTi1-3yMn3yO3, with a perovskite-type structure were studied. It was found that they were mixed conductors. The ionic conductivity decreased when the amount of Li was decreased, and the electronic conductivity increased with the Mn content.

Synthesis, Phase Diagram, and Conductivity Study in a (La,Li,Ti,Mn)O3 System. I.Moreno, M.Morales, M.L.Martinez Sarrión: Journal of Solid State Chemistry, 1998, 140[2], 377-86