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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/13636
Title: Dielectric and impedance study of lead-free ceramic: (Na 0.5Bi0.5)ZrO3
Authors: Lily
Kumari K.
Prasad K.
Yadav, Kamlesh Kumar
Published in: Journal of Materials Science
Abstract: Polycrystalline sample of (Na0.5Bi0.5)ZrO3 was prepared using a high-temperature solid-state reaction technique. XRD analysis indicated the formation of a single-phase orthorhombic structure. Dielectric study revealed the diffuse phase transition at 425 °C. AC impedance plots were used as tools to analyse the electrical behaviour of the sample as a function of frequency at different temperatures. The ac impedance studies revealed the presence of grain boundary effect at and above 350 °C. Complex impedance analysis indicated non-Debye type dielectric relaxation and negative temperature coefficient of resistance (NTCR) character of (Na 0.5Bi0.5)ZrO3. AC conductivity data were used to evaluate the density of states at Fermi level and activation energy of the compound. DC electrical and thermal conductivities of grain and grain boundary have been assessed. © Springer Science+Business Media, LLC 2007.
Citation: Journal of Materials Science (2007), 42(15): 6252-6259
URI: https://doi.org/10.1007/s10853-006-0824-y
http://repository.iitr.ac.in/handle/123456789/13636
Issue Date: 2007
ISSN: 222461
Author Scopus IDs: 16550446900
23091285300
57191917084
7005825645
Author Affiliations: Lily, Materials Research Laboratory, University Department of Physics, T. M. Bhagalpur University, Bhagalpur 812 007, India
Kumari, K., Materials Research Laboratory, University Department of Physics, T. M. Bhagalpur University, Bhagalpur 812 007, India
Prasad, K., Materials Research Laboratory, University Department of Physics, T. M. Bhagalpur University, Bhagalpur 812 007, India
Yadav, K.L., Department of Physics, Indian Institute of Technology, Roorkee 247 667, India
Corresponding Author: Prasad, K.; Materials Research Laboratory, University Department of Physics, T. M. Bhagalpur University, Bhagalpur 812 007, India; email: k_prasad65@yahoo.co.in
Appears in Collections:Journal Publications [PH]

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