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

DOI: 10.4236/msa.2011.211213   PDF   HTML     5,153 Downloads   8,414 Views   Citations


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.

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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.

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The authors declare no conflicts of interest.


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