Reflection spectra for the perovskites, La2/3-xM3xTiO3 (where M was Li, Na or K), were presented. When M was Li, the perovskites exhibited a high Li-ion conductivity.

Lithium Ion Conductors Based on the Perovskite La2/3-xLi3xTiO3. A.G.Belous: Journal of the European Ceramics Society, 2001, 21[10-11], 1797-800