Share This Article:

Structural and Electrical Characteristics of Ba(Fe0.5Nb0.5)O3-SrTiO3 Ceramic System

Abstract Full-Text HTML Download Download as PDF (Size:1786KB) PP. 1593-1600
DOI: 10.4236/msa.2011.211213    4,991 Downloads   8,187 Views   Citations

ABSTRACT

A complex structure of barium iron niobate, Ba(Fe0.5Nb0.5)O3 (BFN) and strontium titanate SrTiO3 (ST) was fabricated by a solid-state reaction method. The phase formation of Ba(Fe0.5Nb0.5)O3-SrTiO3 was checked using X-ray diffraction (XRD) technique. The X-ray structural analysis of BFN and BFN-ST ceramics, showed the formation of single-phase compound in the monoclinic system, which is a distorted structure of an ideal cubic perovskite. Careful examination of microstructures of the individual compounds of the system was done by the scanning electron micrograph (SEM), and confirms the polycrystalline nature of the systems. Detailed studies of dielectric and electrical impedance properties of the systems in a wide range of frequency (100Hz - 5MHz) and different temperatures (30°C-285°C) showed that these properties are strongly dependent on temperature and frequency.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

N. Singh, P. Kumar, A. Sharma and R. Choudhary, "Structural and Electrical Characteristics of Ba(Fe0.5Nb0.5)O3-SrTiO3 Ceramic System," Materials Sciences and Applications, Vol. 2 No. 11, 2011, pp. 1593-1600. doi: 10.4236/msa.2011.211213.

References

[1] V. Prakash, A. Datta, S. N. Choudhary and T. P. Sinha, “Dielectric Relation in Perovskite Ba(Zn1/2W1/2) O3,” Materials Science and Engineering B, Vol. 142, 2007, pp. 98-105. doi:10.1016/j.mseb.2007.07.007
[2] L. Agrawal, B. P. Singh and T. P. Sinha,” Dielectric Relaxation in Complex Perovskite Oxide In(Ni1/2Zr1/2)O3,” Materials Research Bulletin, Vol. 44, 2009, pp. 1858- 1862. doi:10.1016/j.materresbull.2009.05.014
[3] J. R. Macdonald, “Impedance Spectroscopy Emphasizing Solid Materials and Systems,” John Wiley and Sons, Inc., New York, 1987.
[4] D. C. Sinclair and A. R. West, “Impedance and Modulus Spectroscopy of Semiconducting BaTiO3 Showing Positive Temperature Coefficient of Resistance,” Journal of Applied Physics, Vol. 66, 1989, p. 3850. doi:10.1063/1.344049
[5] A. K. Jonscher, “A New Understanding of the Dielectric Relaxation of Solids,” Physica Status Solidi A, Vol. 32, 1975, p. 665. doi:10.1002/pssa.2210320241
[6] F. Roulland, R. Terras, G. Allainmat, M. Pollet and S. Marinel, “Lowering of BaB′1/3B″2/3O3 Complex Pero- vskite Sintering Temperature by Lithium Salt Additions,” Journal of the European Ceramic Society, Vol. 24, 2004, 1019. doi:10.1016/S0955-2219(03)00553-3
[7] S. Saha and T. P. Sinha, “Law-Temperature Scaling Behavior of Ba(Fe0.5Nb0.5)O3,” Physical Review B, Vol. 65, 2002, pp. 134103-134106. doi:10.1103/PhysRevB.65.134103
[8] S. Saha and T. P. Sinha, “Structural and Dielectric Studies of Ba(Fe0.5Nb0.5)O3,” Journal of Physics: Condensed Matter, Vol. 14, 2002, p. 249. doi:10.1088/0953-8984/14/2/311
[9] U. Intatha, S. Eitssayeam, J. Wang and T. Tunkasiri, “Impedance Study of Giant Dielectric Permittivity in BaFe0.5Nb0.5O3 Perovskite Ceramic,” Current Applied Physics, Vol. 10, 2010, pp. 21-25. doi:10.1016/j.cap.2009.04.006
[10] B. Fang, Z. Cheng, R. Sun and C. Ding, “Photonic & Sonic Band-Gap and Metamaterial Bibliography,” Journal of Alloys and Compounds, Vol. 471, 2009, pp. 539-543. doi:10.1016/j.jallcom.2008.04.056
[11] I. P. Raevski, S. A. Prosandeev, A. S. Bogatin, M. A. Malitskaya and L. Jastrabik, “High Dielectric Permittivity in AFe1/2B1/2O3 Nonferroelectric Perovskite Ceramics (A = Ba, Sr, Ca; B = Nb, Ta, Sb),” Journal of Applied Physics, Vol. 93, 2003, p. 4130. doi:10.1063/1.1558205
[12] L. Nedelcu, M. I. Toacsan, M. G. Banciu and A. Ioachim, Journal of Alloys Compounds, Vol. 509, 2011, pp. 477-481. doi:10.1016/j.jallcom.2010.09.069
[13] K. Tezuka, K. Henimi, Y. Hinatsu, N. M. Masaki, Journal of Solid State Chemistry, Vol. 154, 2000, p. 591. doi:10.1006/jssc.2000.8900
[14] M. Yokosuka, “Dielectric Dispersion of the Complex Perovskite Oxide Ba(Fe1/2Nb1/2)O3 at Low Frequencies,” Journal of Applied Physics, Vol. 34, 1995, p. 5338. doi:10.1143/JJAP.34.5338
[15] N. Rama, J. B. Philipp, M. Opel, K. Chandrasekaran, V. Sankaranarayanan, R. Gross and M. S. R. Rao, “Study of Magnetic Properties of A2B′NbO6 (A = Ba,Sr,BaSr; and B′ = Fe and Mn) Double Perovskites,” Journal of Applied Physics, Vol. 95, 2004, p. 7528. doi:10.1063/1.1682952
[16] E. Wul and PowdMult, “An Interactive Powder Diffraction Data Interpretation and Index Program,” version 2.1, School of Physical Science, Flinders University of South Australia, Bedford Park, S.A. 5042, Australia.
[17] N. K. Singh, P. Kumar, H. Kumar and R. Rai, “Structural and Dielectric Properties of Dy2(Ba0.5R0.5)2O7 (R = W, Mo) Ceramics,” Advanced Materials Letters, Vol. 1, 2010, pp. 79-82. doi:10.5185/amlett.2010.3102
[18] N. K. Singh, P. Kumar, O. P. Roy and R. Rai, “Structural, and Dielectric Properties of Eu2(B?0.5 B?0.5)2O7 (B? = Ba; B? = Mo, W) Ceramics,” Journal of Alloys and compounds, Vol. 507, 2010, pp. 542-546. doi:10.1016/j.jallcom.2010.08.015
[19] N. K. Singh, R. N. P. Choudhary and B. Banarji, “Dielectric and Electrical Characteristics of Nd2(Ba0.5R0.5)2O7 (R = W, Mo) Ceramics,” Physica B, Vol. 403, 2008, p. 1673. doi:10.1016/j.physb.2007.09.083
[20] P. Kumar, B. P. Singh, T. P. Sinha and N. K. Singh, “Ac conductivity and Dielectric Relaxation in Ba(Sm1/2Nb1/2)O3, Ceramic,” Physica B, Vol. 406, 2011, pp. 139-143. doi:10.1016/j.physb.2010.09.019
[21] N. K. Singh, P. Kumar and R. Rai, Journal of Alloys and compounds, Vol. 509, 2011. pp. 2957-2963. doi:10.1016/j.jallcom.2011.01.153
[22] P. Kumar, B. P. Singh, T. P. Sinha and N. K. Singh, Advanced Materials Letters, Vol. 2, No. 1, 2011, pp. 76-79. doi:10.5185/amlett.2010.11176
[23] Y. J. Li, X. M. Chen, R. Z. Hou and Y. H. Tang, “Maxwell-Wagner Characterization of Dielectric Relaxation in Ni0.8Zn0.2Fe2O4/Sr0.5Ba0.5Nb2O6 Composite,” Solid State Community, Vol. 137, 2006, p. 120.
[24] P. Q. Mantus, “Dielectric Response of Materials: Extension to the Debye Model,” Journal of the European Ceramic Society, Vol. 19, 1999, p. 2079. doi:10.1016/S0955-2219(98)00273-8
[25] S. Ananta and N. W. Thomas, “Relationships between Sintering Conditions, Microstructure and Dielectric Properties of Lead Iron Niobate,” Journal of the European Ceramic Society, Vol. 9, 1999, p. 1873. doi:10.1016/S0955-2219(98)00290-8
[26] K. Singh, S. A. Band and W. K. Kinge, “Effect of Sin- tering Temperature on Dielectric Properties of Pb(Fe1/2- Nb1/2)O3 Perovskite Material,” Ferroelectrics, Vol. 306, 2004, p. 179. doi:10.1080/00150190490460821
[27] A. Dutta, C. Bharti and T. P. Sinha, “AC Conductivity and Dielectric Relaxation in CaMg1/3Nb2/3O3,” Materials Research Bulletin, Vol. 43 2008, pp. 1246-1254. doi:10.1016/j.materresbull.2007.05.023

  
comments powered by Disqus

Copyright © 2019 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.