Recent development on modification of synthesized barium titanate (BaTiO ₃ ) and polymer/BaTiO ₃ dielectric composites

In order to fabricate barium titanate (BaTiO ₃ ) particles with high purity, small particle size and narrow distribution of particle size, the synthesis methods and doping elements should be properly selected. Compared to polar polymers, non-polar polymers have advantages on the fabrication of miniaturized and lightweight electronic devices, due to excellent process-ability and little endogenous heat generated in the electric field. To avoid the aggregation of BaTiO ₃ particles in polymer matrix, several nanometer thick organic coating on the BaTiO ₃ surface is needed. What’s more, the alignment of BaTiO ₃ and hybrid use of fillers can further improve the dielectric properties of polymer/BaTiO ₃ composites.