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Structural Morphological and Dielectric Properties of Pb1-xNixTiO3 Doped with Ni

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DOI: 10.4236/ojapps.2016.611070    1,634 Downloads   2,143 Views Citations

ABSTRACT

In this paper, we have reported a conformable PbTiO3 ceramics doped with Ni by standard double sintering technique as well as chemical co-precipitation method which were successfully synthesized by means of carefully controlled processing parameters. Single phase formation was confirmed through X-Ray Diffraction (XRD) analysis, IR spectroscopy, SEM micrograph and TEM images. Discussion and comparison between both preparation methods were made on the basis of observed results. The tetragonality c/a decreased from 1.049 to 1.0276 for ceramic samples and decreased from 1.06519 to 1.0365 for co-precipitation samples by increasing Ni content. TEM images show small ferroelectric domains of about 3 to 14 nm for the co-precipitation sample and 26 to 48 nm for the ceramic samples. The SEM of co- precipitation samples shows that the microstructure is very dense. The behavior of ε identifies that our samples are nonrelaxor. Increasing the Ni concentration increases the value of dielectric constant and the Tc is shifted to lower temperature.

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Tawfik, A. , Hemeda, O. , Hemeda, D. , Shady, R. and Barakat, M. (2016) Structural Morphological and Dielectric Properties of Pb1-xNixTiO3 Doped with Ni. Open Journal of Applied Sciences, 6, 796-813. doi: 10.4236/ojapps.2016.611070.

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