Fabrication of Monodispersed 5‐nm <scp> <scp> BaTiO ₃ </scp> </scp> Nanocrystals with Narrow Size Distribution via One‐Step Solvothermal Route

Abstract

A convenient one‐step solvothermal route has been developed to synthesize monodispersed barium titanate with narrow size distributions. The key point of this method is the controlling of hydrolysis of Ti(OC 4 H 9 ) 4 with Diethylene glycol. The as‐prepared BaTiO 3 nanoparticles were characterized by X‐ray diffraction, transmission electron microscopy ( TEM ), high‐resolution TEM , BET ‐specific surface area measurement and Raman spectrum. The monodispersed BaTiO 3 nanoparticles obtained by this method have an average size of 5 nm with a narrow size distribution and a lattice tetragonality of 1.0069 ± 0.0010, which is promising for the ferroelectric science and its industry application.