Abstract
Lead niobate zirconate titanate (PNZT) with general formula 0.5PbNb2O6–0.5Pb(ZrxTi1-x)O3 (where x = 0.15, 0.25, 0.35) and lead nickel niobate zirconate titanate (PNNZT) with general formula Pb(NixNb0.5-xZr0.25Ti0.25)O3 (where x = 0.167, 0.250, 0.333) have been prepared by conventional solid state reaction. The phase formation has been studied by X – ray diffraction analysis. Raman investigations have been carried out in the 200–1000 cm−1 wave number range. The structural changes observed in the X – ray diffraction pattern has been further confirmed by Raman analysis. The major changes in the E(1TO), A1(1TO) and E + B1 phonon modes suggest the structural change from cubic to rhombohedral with increase in Ni concentration in PNNZT. The optical band gap has been calculated from UV – Vis absorption spectra.
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One of the authors Dr. Deepa Singh is thankful to Department of Science & Technology (DST), Government of India for awarding Women Scientist scheme vide no.: SR/WOS-A/PS-59/2012 (G). The authors express their gratitude to Sophisticated Test and Instrumentation Centre (STIC) Cochin University for providing XRD and SEM – EDAX facilities.
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Gupta, R., Singh, D., Singh, R.K. et al. Effect of Ni addition on PNZT tungsten bronze structure. J Electroceram 40, 235–246 (2018). https://doi.org/10.1007/s10832-018-0125-2
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DOI: https://doi.org/10.1007/s10832-018-0125-2