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Electrical conduction in NaNbO3-BaTiO3 Ceramics: Impedance Spectroscopy Analysis

Author : P.S. Mishra, Umakant Prasad and Sharwan Kumar

Pages : 438-443. DOI:http://Dx.Doi.Org/10.14741/Ijcet/22774106/7.2.2017.17
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Lead-free ceramic system (1-x)NaNbO3-xBaTiO3 for x = 0, 0.25, 0.50, 0.75 and 1.0 were prepared by conventional ceramic technique. The ac conductivity data were found to obey the power law and showed negative temperature coefficient of resistance behaviour. The ac conductivity data were used to evaluate the activation energy of the compounds. The correlated barrier hopping model was found to successfully explain the mechanism of charge transport in this system.

Keywords: Ceramic, Lead free, AC conductivity, Conduction mechanism, Hopping model

Article published in International Journal of Current Engineering and Technology, Vol.7, No.2 (April-2017)

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