Abstract
A polycrystalline perovskite-type oxide Bi1/2Ag1/2TiO3 was synthesized under oxidizing condition generated by the decomposition of Ag2O. The lattice parameter ao= 0.3889(2) nm assuming cubic symmetry. The temperature dependence of dielectric constant and the polarization curve suggested that Bi1/2Ag1/2TiO3 is ferroelectric.