Abstract
The electrical properties of CaMn0.6Fe0.4O2.8 perovskite sample have been investigated, using complex impedance analysis in 102–5.22 × 106 Hz frequency range with varying temperature from 293 to 348 K. SEM micrograph shows that the sample exhibits well-developed grains with average particle size of about 320 nm. Rietveld analysis of XRD pattern shows that sample crystallizes in the orthorhombic structure with Pnma space group. The total conductance curves of the sample are found to obey Jonscher power law G(ω) = G DC +Aω n with an increase of frequency exponent (n) as temperature increases. The activation energy deduced from the analysis of the conductance is about 0.19 eV. The imaginary part (Z″) of the impedance is characterized by the appearance of peak which shifts to higher frequencies with the increase of temperature. Such behavior shows the existence of a relaxation process in our system. The impedance study using Nyquist representation revealed the appearance of semicircular arcs and an equivalent circuit, R 1 + (R 2 //C), has been proposed to explain the impedance results.
Similar content being viewed by others
References
D.K. Mahato, A. Dutta, T.P. Sinha, J. Mater. Sci. 45, 6757 (2010)
D.K. Mahato, A. Dutta, T.P. Sinha, Bull. Mater. Sci. 120, 455 (2011)
C. Bharti, T.P. Sinha, Phys. B 406, 624 (2011)
K.I. Kobayashi, T. Kimura, H. Sawada, K. Terakura, Y. Tokura, Nature 395, 677 (1998)
J.B. Goodenough, Prog. Solid State Chem. 5, 145 (1971)
D.P. Karim, A.T. Aldred, Phys. Rev. B 20, 2255 (1979)
W.J. Weber, C.W. Griffen, J.L. Bates, J. Am. Ceram. Soc. 70, 265 (1987)
J.H. Kuo, H.U. Anderson, D.M. Sparlin, P.E. Parris, J. Solid State Chem. 83, 52 (1989)
R. Von Helmolt, Phys. Rev. Lett. 71, 2331 (1993)
K. Chadra et al., Appl. Phys. Lett. 63, 1990 (1993)
A. Tozri, E. Dhahri, E.K. Hlil, Mater. Lett. 64, 2138 (2010)
J.R. Macdonald, Impedance Spectroscopy: Emphasizing Solid Materials and Systems, vol. 33, no. 5 (Wiley, New York, 1988), p. 725
A.K. Jonscher, Dielectric Relaxation in Solids (Chelsea Dielectric Press, London, 1996)
A.K. Jonscher, Universal Relaxation Law (Chelsea Dielectric Press, London, 1983)
K. Funke, Prog. Solid State Chem. 22, 111 (1993)
J. Hu, H. Qin, J. Magn. Magn. Mater. 23, L1 (2001)
A. Omri, M. Bejar, E. Dhahri, M. Es-Souni, M.A. Valente, M.P.F. Graça, L.C. Costa, J. Alloys Compd. 536, 173 (2012)
S. Hcini, S. Khadhraoui, A. Triki, S. Zemni, M. Boudard, M. Oumezzine, J. Supercond. Nov. Magn. 27, 195 (2013)
A. Shukla, R.N.P. Choudhary, A.K. Thakur, J. Phys. Chem. Solids 70, 1401 (2009)
H. Rahmouni, M. Nouiri, R. Jemai, N. Kallel, F. Rzigua, A. Selmi, K. Khirouni, S. Alaya, J. Magn. Magn. Mater. 316, 23 (2007)
K.S. Cole, R.H. Cole, J. Chem. Phys. 10, 98 (1942)
N.F. Mott, E.A. Davis, Electronic Properties of Non-crystalline Materials (Clarendon Press, Oxford, 1979)
D. Johnson, ZView: A Software Program for IES Analysis, Version 2.8 (Scribner Associates Inc., Southern Pines, NC, 2008)
A. Dhahri, F.I.H. Rhouma, J. Dhahri, E. Dhahri, M.A. Valente, Solid State Commun. 151, 738 (2011)
M.A. Valente, M. Peres, C. Nico, T. Monteiro, M.P.F. Graça, A.S.B. Sombra, C.C. Silva, Opt. Mater. 33, 1964 (2011)
H. Kolodziej, L. Sobczyk, Acta Phys. Pol. A 39, 59 (1971)
X. Qian, N. Gu, Z. Cheng, X. Yang, S. Dong, Electronichim. Acta 46, 1829 (2001)
A. Benali, A. Souissi, M. Bejar, E. Dhahri, M.F.P. Graça, M.A. Valente, Chem. Phys. Lett. 637, 7 (2015)
A. Benali, M. Bejar, E. Dhahri, M.F.P. Graça, L.C. Costa, J. Alloys Compd. 653, 506 (2015)
Acknowledgments
This work is supported by The Tunisian National Ministry of Higher Education, Scientific Research and Technology. German Federal Ministry of Education and Research.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Tahri, T., Hamdaoui, N., Omri, A. et al. Study of electrical and dielectric properties of CaMn0.6Fe0.4O2.8 perovskite. J Mater Sci: Mater Electron 27, 10525–10531 (2016). https://doi.org/10.1007/s10854-016-5143-8
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10854-016-5143-8