Skip to main content Accessibility help

Analysis of Alternating Current Conduction and Impedance Spectroscopy Study of BaBi2Nb2O9 Thin Films

  • Apurba Laha (a1), S. Saha (a2) and S. B. Krupanidhi (a1)


Alternating current conduction in BaBi2Nb2O9 (BBN) thin films has been studied over a wide range of temperatures and frequencies. A power law relation was used to explain the frequency dependence of ac conductivity. In the higher frequency region, ac conductivity of the BBN thin films was temperature independent. The activation energy calculated from the Arrhenius plot of ac conductivity was found to be around 0.25 eV. It was attributed to shallow trap controlled space charge conduction in the bulk of the sample. The impedance analysis of the BBN thin films was also performed to gain insight into the microstructure of the films, including the characteristics of the grains, grain boundaries, and film-electrode interface. The response of a single RC combination has been observed for our case. The effect of other components, such as the grain boundary interface and electrode/film interface was negligible. The imaginary component of impedance (Z”) exhibited different peak maxima at different temperatures. A Debye mechanism was found to be appropriate to explain the polarization relaxation in BBN thin films.



Hide All
1. Araujo, C. A. Paz. de, Cuchiaro, J. D., Scott, M. C., McMillan, L. D., and Scott, J. F., Nature (London) 374 627 (1995).
2. Auciello, O., Scott, J. F. and Ramesh, R., Physics Today, 22 (1998).
3. Otsuki, T. and Arita, K., Integr. Ferroelectr., 17, 31 (1997).
4. Song, T. K., Lee, J. -K., and Jung, H. J., Appl. Phys. Lett., 69, 3839 (1996).
5. Bhattacharyya, S., Bharadwaja, S., and Krupanidhi, S. B.. Appl. Phys. Lett. 75, 2656 (1999)
6. Desu, S. B. and Li, T., Mat. Sci. Eng.,B34, L4 (1995).
7. Lu, C. H. and Wen, C. Y., J. Appl. Phys. 86, 6335 (1999).
8. Laha, A. and Krupanidhi, S. B., Appl. Phys. Lett. 77, 3818 (2000).
9. Hu, H. and Krupanidhi, S. B., J. Mater. Res. 9, 1484 (1994).
10. Yoo, I. K. and Desu, S. B., Intgr. Ferroelectr. 3, 365 (1993)
11. Mihara, T., Yoshimori, H., Watanabe, H., and Araujo, C. A. P. de, Jpn. J. Appl. Phys., 34, 5233 (1995).
12. Smolenskii, G. A. Isupov, V. A., and Agranovskaya, A., Sov. Sol. State, 3, 651 (1961).
13. Thorton, J. A., Annu. Rev. Mater. Sci. 7,239 (1997).
14. Hippel, V., Brockenridge, Chelsey and , Tisza, Ind. and Eng. Chem. 38, 1097 (1946).
15. Jonscher, A. K., Dielectric relaxation in solids, Chelsea Dielectrics Press, London.
16. Laha, A. and Krupanidhi, S. B., Communicated to J. Appl. Phys. 2001.
17. Sinclair, D. C. and West, A. R., J. Appl. Phys. 66 (6), 3850 (1989).

Analysis of Alternating Current Conduction and Impedance Spectroscopy Study of BaBi2Nb2O9 Thin Films

  • Apurba Laha (a1), S. Saha (a2) and S. B. Krupanidhi (a1)


Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed