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| Ertürk, Emre |
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| Taccardi, Nicola |
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Ravi, V.
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Publications (6/6 displayed)
- 2019DSA-10: a prototype array for localizing fast radio burstscitations
- 2005A coprecipitation technique to prepare BaNb2O6citations
- 2005Preparation of nanocrystalline ferroelectric CaBi2Ta 2O9 by the urea methodcitations
- 2005Preparation of ferroelectric BaNb2O6 by the urea methodcitations
- 2005Synthesis of Sr0.5Ba0.5Nb2O6 by urea methodcitations
- 2004A low temperature route to prepare BaNb2O6citations
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article
Preparation of nanocrystalline ferroelectric CaBi2Ta 2O9 by the urea method
Abstract
<p>A precipitate was formed when a aqueous solution of CaCl<sub>2</sub>, BiCl<sub>3</sub>, TaF<sub>5</sub> and urea in stoichiometric ratio (total metal cations to urea ratio is 5) is heated on a water bath. This precipitate on decomposition at 600 °C yielded the nanocrystallites of ternary oxide CaBi<sub>2</sub>Ta<sub>2</sub>O<sub>9</sub> (CBT) as confirmed by X-ray diffraction (XRD). Particle size and morphology was studied by transmission electron spectroscopy (TEM). Ferroelectric hysteresis loop parameters such as remnant polarization (P<sub>r</sub>) and coercive field (E<sub>C</sub>) were also determined. TEM investigations revealed that the average particle size of the polycrystalline powder is 70 nm. The room temperature dielectric constant was found to be 110.</p>