Article ID Journal Published Year Pages File Type
1617660 Journal of Alloys and Compounds 2011 7 Pages PDF
Abstract
▶ In this paper we are focused on single-phase BaFe0.5Nb0.5O3 (BFN) and perovskite solid solution ceramics with compositions of 0.85Ba(Fe0.5Nb0.5)O3 + 0.15SrTiO3 (0.85BFN + 0.15ST) and 0.80Ba(Fe0.5Nb0.5)O3 + 0.20SrTiO3 (0.80BFN + 0.20ST) samples. These ceramics were synthesized by the solid-state reaction method. The XRD patterns of the BFN and BFN-ST at room temperature show a monoclinic phase. Detailed studies of dielectric and impedance properties of the materials in a wide range of frequency (100 Hz-5 MHz) and temperatures (30-270 °C) showed that properties are strongly temperature and frequency dependent. Complex Argand plane plot of ɛ″ against ɛ′, usually called Cole-Cole plots is used to check the polydispersive nature of relaxation phenomena in above mentioned compounds. These compounds are very useful for high voltage capacitors and other applications.
Related Topics
Physical Sciences and Engineering Materials Science Metals and Alloys
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