Effect of Doping on Structural and Dielectric Properties of BaTiO3

The synthesis and characterization of Copper and Cobalt doped barium titanate; BaTi0.97Cu0.03O3 and BaTi0.97Co0.03O3 was investigated with a view to understand its structural and dielectric properties. A finest possible sample of Copper and Cobalt doped micro particles of BaTiO3 (BTO) with possible tetragonal structure via a solid-state route was prepared. Prepared samples were structural characterized by X-ray diffraction (XRD). Fourier Transform Infrared Spectroscopy were use to determine the Ti-O bond length position according to doping of Cu and Co on Titanium site. The dielectric constant measurements of the sample above and below the Curie temperature were carried out at 1 MHz. The Transition temperature is found shifted towards lower side from that of pure BaTiO3. The Thermal Hysteresis is indicative of the fact that the transition is indeed of First Order.