| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1516769 | Journal of Physics and Chemistry of Solids | 2012 | 5 Pages |
The AC conductivity and complex impedance spectroscopy of CuO-doped (Ba0.5Sr0.5)TiO3 ceramic were investigated. X-ray diffraction analysis showed that CuO-doped (Ba0.5Sr0.5)TiO3 has a perovskite structure without any pyrochlore phase. Frequency dependent dielectric permittivity was discussed at a different temperature range. The activation energy was calculated and discussed through the Arrehnius equation from the ac conductivity with different frequency plots. CuO-doped (Ba0.5Sr0.5)TiO3 ceramics have a negative temperature coefficient of resistivity. Dependence of impedance spectroscopy on frequency and temperature showed that the conduction process in the CuO-doped (Ba0.5Sr0.5)TiO3 ceramic follows the thermally activated conduction mechanism.
► In this research, we have succeeded to lower the sintering temperature of (Ba0.5Sr0.5)TiO3 ceramic by adding CuO dopants. ► CuO-doped (Ba0.5Sr0.5)TiO3 ceramic showed huge value of dielectric permittivity. ► AC conductivity and complex impedance spectroscopy of CuO-doped (Ba0.5Sr0.5)TiO3 ceramic were investigated to know the electrical properties. ► X-ray diffraction analysis showed that CuO-doped (Ba0.5Sr0.5)TiO3 has the perovskite structure without any pyrochlore phase. ► The dependence of the impedance spectroscopy on the frequency and temperature showed that the conduction process in the CuO-doped (Ba0.5Sr0.5)TiO3 ceramic follows the thermally activated conduction mechanism.
