Synthesis of tetragonal BaTiO₃ nano-particle via a novel tartaric acid co-precipitation process

A novel tartaric acid co-precipitation process was firstly reported to prepare tetragonal BaTiO₃ nano-powder with barium chloride, titanium tetrachloride as raw materials and tartaric acid as precipitant agent. The as-obtained BaTiO₃ powder exhibited a small average particle size about 140 nm, which still held a high tetragonality (c/a ratio) of 1.0092, suggesting its promising applications in multilayer ceramic capacitors (MLCC). In addition, this synthetic method will be of general interest to people who focuses on synthesis technology of Ti-based multicomponent oxides nano-materials owing to its outstanding advantages, including mild reaction condition, facile synthetic processes and especially stabilization of (TiO)²⁺ even in a high pH about 8.