http://repository.iitr.ac.in/handle/123456789/13946| Title: | Hopping type of conduction in (Na0.5Bi0.5)ZrO3 ceramic |
| Authors: | Prasad K. Lily Kumari K. Yadav, Kamlesh Kumar |
| Published in: | Journal of Physics and Chemistry of Solids |
| Abstract: | Polycrystalline sample with (Na0.5Bi0.5)ZrO3 (NBZ) stoichiometry was prepared using a high-temperature solid-state reaction technique. X-ray diffraction (XRD) analyses indicate the formation of a single-phase perovskite-type orthorhombic structure. AC impedance plot is used as tool to analyse the electrical behaviour of the sample as a function of temperature at different frequency. The AC impedance studies revealed the presence of grain boundary effect and evidence of a negative temperature coefficient of resistance (NTCR) character. Pseudo Cole-Cole and complex electric modulus analyses indicated non-Debye-type dielectric relaxation. The AC conductivity obeys the universal power law. The pair approximation type correlated barrier hopping (CBH) model explains the universal behaviour of the s exponent. The apparent activation energy to the conduction process and minimum hopping distance are discussed. © 2007 Elsevier Ltd. All rights reserved. |
| Citation: | Journal of Physics and Chemistry of Solids (2007), 68(8): 1508-1514 |
| URI: | https://doi.org/10.1016/j.jpcs.2007.03.023 http://repository.iitr.ac.in/handle/123456789/13946 |
| Issue Date: | 2007 |
| Keywords: | D. Electrical conductivity |
| ISSN: | 223697 |
| Author Scopus IDs: | 57191917084 16550446900 23091285300 7005825645 |
| Author Affiliations: | Prasad, K., Materials Research Laboratory, Department of Physics, T. M. Bhagalpur University, University Campus, Bhagalpur, 812 007, India Lily, Materials Research Laboratory, Department of Physics, T. M. Bhagalpur University, University Campus, Bhagalpur, 812 007, India Kumari, K., Materials Research Laboratory, Department of Physics, T. M. Bhagalpur University, University Campus, 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, Department of Physics, T. M. Bhagalpur University, University Campus, Bhagalpur, 812 007, India; email: k_prasad65@yahoo.co.in |
| Appears in Collections: | Journal Publications [PH] |
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