Synthesis of nanosized (Li,La){Ti,Nb,Ta}O3 particles using the sol-gel method

Nanoparticles of lithium titanate, niobate, and tantalate with the structure of defect perovskite were synthesized using the Pechini method. The formation of single-phase lithium lanthanum titanate was shown to occur at 700°C. The average particle size was d ～ 15 nm. For niobate and tantalate, the formation of the perovskite phase started at 900°C; the average particle size in this case was 50–100 nm.