The exploration of the Li–Ti–Mg–O system, using both sol–gel technique and solid state reaction method, allowed a new phase, Li2MgTiO4, with disordered rock salt structure (a = 4.159Å) to be synthesized. The latter was shown to be a good type I dielectric material, with a relative constant of 15 at high frequency and low dielectric loss (<10−3) at −60 to 160C. It was also observed that the sintering temperature of this phase was strongly lowered by adopting the sol–gel technique compared to solid state reaction (1150C instead of 1300C). It was shown that this phase exhibited cationic conductivity above 400C (σ600C = 9 x 10−5S/cm).

The Rock Salt Oxide Li2MgTiO4 – Type-I Dielectric and Ionic Conductor. M.V.V.M.S.Kishore, S.Marinel, V.Pralong, V.Caignaert, S.D’Astorg, B.Raveau: Materials Research Bulletin, 2006, 41[7], 1378-84