Low temperature synthesis of cubic BaTiO3 nanoparticles

A new process has been developed to prepare nanocrystalline BaTiO₃ at room temperature and atmospheric pressure. The experimental results show that cubic BaTiO₃ nanoparticles can be prepared even at room temperature (25 °C). These cubic BaTiO₃ nanoparticles are irregular quasi-spheres with the size ranging from hundreds of nanometers to tens of nanometers as the temperature is increased from 25 to 80 °C. Raman spectra of the products obtained at different temperature confirmed that the BaTiO₃ were cubic phase. The influence of reactants concentration on the formation of BaTiO₃ nanoparticles was also investigated.