MSA  Vol.7 No.8 , August 2016
Structural and Dielectric Properties of (Bi2O3Fe2O3)0.4(Nb2O5)0.6 for Different Sintering Temperature
Abstract: In this research work, (Bi2O3Fe2O3)0.4(Nb2O5)0.6 was made by the solid state reaction method. Samples were sintered at four different temperatures (850°C, 925°C, 1000°C and 1150°C) to study the effect of sintering temperature on the various properties of the samples. X-ray diffraction analysis confirmed that single phase Bi1.721δ0.089Fe1.056Nb1.134O7 was found when sintering temperature increased. At the same time, larger grain size was found when sintering temperature increased. From variation of dielectric loss with respect to frequency, a small peak was found when sample was sintered at higher temperature (1150°C). Dielectric constant of the sample decreases with the increase of frequency for all the samples. With the variation of temperature, DC resistivity of the samples showed that resistivity decreases with the increase of measuring temperature which indicates semiconducting nature.
Cite this paper: Mowri, S. , Gafur, M. , Hossain, Q. , Ahmed, A. and Bashar, M. (2016) Structural and Dielectric Properties of (Bi2O3Fe2O3)0.4(Nb2O5)0.6 for Different Sintering Temperature. Materials Sciences and Applications, 7, 421-429. doi: 10.4236/msa.2016.78038.

[1]   Eerenstein, W., Mathur, N.D. and Scott, J.F. (2006) Multiferroic and Magnetoelectric Materials. Nature, 442, 759.

[2]   Fiebig, M. (2005) Revival of the Magnetoelectric Effect. Journal of Physics D: Applied Physics, 38, R123.

[3]   Catalan, J.F. and Scott (2009) Physics and Applications of Bismuth Ferrite. Advanced Materials, 21, 2463-2485.

[4]   Ryu, J., Priya, S., Uchino, K. and Kim, H.E. (2002) Magnetoelectric Laminate Composites of Piezoelectric and Magnetostrictive Materials. Journal of Electroceramics, 8, 107.

[5]   Kanai, T., Ohkoshi, S.I., Nakajima, A., Watanabe, T. and Hashimoto, K. (2001) A Ferroelectric Ferromagnet Composed of (PLZT)x (BiFe03) I-x Solid Solution. Advanced Materials, 3, 487.

[6]   Kumara, M. and Yadav, K.L. (2007) Rapid Liquid Phase Sintered Mn Doped BiFeO3 Ceramics with Enhanced Polarization and Weak Magnetization. Applied Physics Letters, 91, 242901.

[7]   Wang, Y.P., Zhou, L., Zhang, M.F., Chen, X.Y., Liu, J.M. and Liu, Z.G. (2004) Room Temperature Saturated Ferroelectric Polarization in BiFeO3 Ceramics Synthesized by Rapid Liquid Phase Sintering. Applied Physics Letters, 84, 1731-1733.

[8]   Azougha, F., Freer, R., Thrall, M., Cernik, R., Tuna, F. and Collison, D. (2010) Microstructure and Properties of Co-, Ni-, Zn-, Nb- and W-Modified Multiferroic BiFeO3 Ceramics. Journal of the European Ceramic Society, 30, 727-736.

[9]   Bhole, C.P. (2012) Antiferromagnetic to Paramagnetic Phase Transitions in Bismuth Ferrite (BiFeO3) Ceramics by Solid State Reaction. Ceramics-Silikáty, 56, 127-129.

[10]   Azama, A., Jawadb, A., Ahmedb, A.S., Chamanb, M. and Naqvib, A.H. (2011) Structural, Optical and Transport Properties of Al3+ Doped BiFeO3 Nanopowder Synthesized by Solution Combustion Method. Journal of Alloys and Compounds, 509, 2909-2913.