Effects of CuO doping on structure, microstructure and dielectric properties of BaTiO₃–PbTiO₃ solid solution

Abstract

Ba_0.7Pb_0.3TiO₃ and Ba_0.7Pb_0.3TiO₃+yCuO (y = 0.1 wt%, 0.5 wt%, 1 wt% and 3 wt%) samples were prepared by a solid state reaction method. High purity raw materials were used. Structural properties of the sintered pellets were studied by X-ray diffractometer X’Pert PRO (PANalytical). A single phase of perovskite structure with tetragonal phase was identified at room temperature. The surface morphology of the obtained specimens was characterized by the scanning electron microscopy (Hitachi S4700). The investigations has shown that the synthesized ceramic materials are characterized by the high density, homogeneity of microstructure and low porosity. Dielectric spectroscopy was used to study the electrical properties of the solid solution on the basis of BaTiO₃ doped CuO.

Keywords:

• Solid solution
• barium titanate
• microstructure
• dielectric properties