Abstract
A gel was formed when a aqueous solution of BaCl2, NbF5 and citric acid in stoichiometric ratio is heated on a water bath. This gel on decomposition at 600°C yielded the nano crystallites of BaNb2O6, as confirmed by X-ray diffraction study (XRD). This is a much lower temperature as compared to that prepared by traditional solid state method (1000°C) as reported for the formation of BaNb2O6. Transmission electron microscopic (TEM) investigations revealed that the average particle size is 50 nm for the calcined powders. The room temperature dielectric constant at 1 kHz is found to be 1000. The ferroelectric hysteresis loop parameters of these samples were also studied.
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Gaikwad, S.P., Samuel, V., Pasricha, R. et al. Preparation of nanocrystalline ferroelectric BaNb2O6 by citrate gel method. Bull Mater Sci 28, 121–123 (2005). https://doi.org/10.1007/BF02704230
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DOI: https://doi.org/10.1007/BF02704230