The properties of perovskite-related solid solutions: La1/3-xLi3xNbO3, where x was between 0 and 0.06, were studied. The highest conductivity was a value of 4.3 x 10-5S/cm, at 300K, for an x-value of 0.04.

Lithium-Ion Conductivity in the Novel (La,Li)NbO3 Solid Solution with Perovskite-Related Structure. S.Garcia-Martin, J.M.Rojo, H.Tsukamoto, E.Moran, M.A.Alario-Franco: Solid State Ionics, 1999, 116[1-2], 11-8