Crystal structure and dielectric properties of barium titanate-kaolinite composites

Barium Titanate-Kaolinite composites were prepared systematically by conventional solid-state method. The crystal structure and dielectric properties of samples were investigated by XRD and dielectric measurements, respectively. XRD results show that new phase BaAl2Si2O8 was formed as kaolinite added into BaTiO3. The 10 wt% kaolinite addition led to a considerable reduction in sintering temperature and a strong densification. The dielectric constant of BaTiO3-Kaolinite composites tended to be stable with increasing of kaolinite content.