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Co-precipitation method for the preparation of ferroelectric CaBi4Ti4O15

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Abstract

A simple co-precipitation technique has been successfully applied for the preparation of pure single phase CaBi4Ti4O15 (CBT) powders. Ammonium oxalate and ammonium hydroxide were used to precipitate Ca2+, Bi3+ and Ti4+ cations simultaneously. No pyrochlore phase was found while heating powder at 600 ∘C and pure CBT phase was found to be formed by X-ray diffraction. Particle size and morphology was studied by transmission electron microscopy (TEM). The room temperature dielectric constant at 1 kHz is 400. The ferroelectric hysteresis loop parameters of these samples were also studied.

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Authors and Affiliations

  1. Physical and Materials Chemistry Division, National Chemical Laboratory, Pune, 411008, India

    S. P. Gaikwad, S. R. Dhage & V. Ravi

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  1. S. P. Gaikwad
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  2. S. R. Dhage
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  3. V. Ravi
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Correspondence to V. Ravi.

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Gaikwad, S.P., Dhage, S.R. & Ravi, V. Co-precipitation method for the preparation of ferroelectric CaBi4Ti4O15. J Mater Sci: Mater Electron 16, 229–231 (2005). https://doi.org/10.1007/s10854-005-0773-2

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  • DOI: https://doi.org/10.1007/s10854-005-0773-2

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