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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