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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/13741
Title: Electrical conduction in (Na0.5 Bi0.5)TiO3 ceramic: Impedance spectroscopy analysis
Authors: Prasad K.
Kumari K.
Lily
Chandra K.P.
Yadav, Kamlesh Kumar
Sen S.
Published in: Advances in Applied Ceramics
Abstract: Polycrystalline sample of (Na0.5 Bi0.5)TiO3 Was prepared using a high temperature solid-state reaction synthesis at 1070°C and subsequent sintering at 1100°C in oxygen atmosphere. X-ray diffraction (XRD) analysis of (Na0.5 Bi0.5)TiO3 powder indicated the formation of a single phase rhombohedral structure. Dielectric study revealed the diffuse phase transition at 340°C. The ac conductivity data were found to obey power law and showed negative temperature coefficient of resistance character. Complex electric modulus analysis indicated non-Debye type dielectric relaxation in the system. The ac conductivity data were used to evaluate the density of states at Fermi level, minimum hopping length and activation energy of the compound. The correlated barrier hopping model was found to successfully explain the mechanism of charge transport in (Na0.5 Bi0.5)TiO3. © 2007 Institute of Materials, Minerals and Mining.
Citation: Advances in Applied Ceramics (2007), 106(5): 241-246
URI: https://doi.org/10.1179/174367607X202627
http://repository.iitr.ac.in/handle/123456789/13741
Issue Date: 2007
Keywords: (Na0.5 Bi0.5)TiO3
Conductivity
Dielectric relaxation
Impedance spectroscopy
ISSN: 17436753
Author Scopus IDs: 57191917084
23091285300
16550446900
15070444700
7005825645
57201072179
Author Affiliations: Prasad, K., 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
Lily, Materials Research Laboratory, University Department of Physics, T M Bhagalpur University, Bhagalpur 812 007, India
Chandra, K.P., Department of Physics, S M College, T M Bhagalpur University, Bhagalpur 812 001, India
Yadav, K.L., Department of Physics, Indian Institute of Technology, Roorkee 247 667, India
Sen, S., National Metallurgical Laboratory, Jamshedpur 831 007, 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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