Abstract
A layered perovskite type ceramic oxide, NaLaTiO4, has been prepared by a standard high temperature solid-state reaction route. Material formation has been confirmed by x-ray diffraction (XRD) studies. Complex impedance analysis on this system has been carried out, to investigate its electrical properties in details. The impedance analysis results have indicated the electrical conduction process to be governed by the contribution of both the grain (bulk) and grain boundaries above a temperature of 350 ∘C with typical negative temperature coefficient of resistance (NTCR) type behaviour like that of a semiconductor. The d. c. conductivity of the material as evaluated from the impedance analysis has been observed to be of the order of ∼ 10−9 Scm−1 at room temperature and ∼ 10−6 Scm−1 at 500 ∘C. The conductivity variation shows a cross over from Mott-type hopping behaviour at lower temperatures to a thermally activated Arrhenius behaviour at higher temperatures.
Similar content being viewed by others
References
Blasse George, Journal of Inorganic Nuclear chemistry 30, 656 (1968)
Toda, K., Karneo, Y., Kurita, S., Sato, M., Solid State Ionics 81 (3–4), 276 (1995)
Toda, K., Karneo, Y., Kurita, S., Sato, M., J. Alloys & compounds 234 (1), 19 (1996)
Mcintyre, R., Falster, A.U., Li, S., Simmons, W.B., Charles O'Connor Wiley, J.B., J. Am. Chem. Soc. 120, 217 (1998)
Kim, S.Y., OH, J.M., Chul Park, J., Byeon, S.H., Chemistry of materials 14 (4), 1643 (2002)
Bouma, B., Blasse, G., J. Phys. & Chem. Solids 56 (2), 261 (1995)
Shinohara, K., Tanaka, A., Kokai Tokkyo Koho japanese parent, J.P.N., Patent No. JP 10085607 1998
JCPDS No. 86-0828
JCPDS No. 40-0306
Byeon, S.H., Park, K., Itoh, M., J. Solid State Chemistry 121, 430 (1996)
Macdonald, J.R., “Impedance Spectroscopy: Emphasizing Solid State Material and Systems”, Wiley New York, 1987
Mott, N.F., “Metal Insulator Transitions, Taylor and Francis”, London, 1990
Chaitanya, I., Gayen, A., Prasad, V., Subramanyan, S.V., Hegde, M.S., Materials Research Bulletin, 37, 1815 (2002)
Jonscher, A.K., Nature, 267, 673 (1977)
Andrew Jonscher, K., J. Molecular Liquids 86, 259 (2000)
Cramer, C., Funke, K., Rolling, B., Saatkamp, T., Wilmer, D., Ingram, M.D., Pradel, A., Ribes, M., Taillades, G., Solid State Ionics 86–88, 481 (1996)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Pradhan, D.K., Samantaray, B.K., Choudhary, R.N.P. et al. Complex impedance analysis of NaLaTiO4 electroceramics. J Mater Sci: Mater Electron 17, 157–164 (2006). https://doi.org/10.1007/s10854-006-6756-0
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/s10854-006-6756-0