One-dimensional (1D) barium titanate (BaTiO 3 ) nanowires, which were uniformly covered with 0D BaTiO 3 nanocrystals, were synthesized by using a simple solvothermal reaction of protonated trititanate (H 2 Ti 3 O 7 ) nanowires with barium hydroxide octahydrate [Ba(OH) 2 ·8H 2 O] at 80°C in ethanol/ water mixed solvent systems. The compositions of the mixed solvents Ϫ the volume ratio of ethanol to deionized water Ϫ was a key controlling parameter in order to determine the phase formation and primary particle size of the 0D BaTiO 3 nanocrystals. Single-phase cubic perovskite BaTiO 3 started
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