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Fabrication and Characterization of Crystalline Cubic Bismuth Zinc Niobate Pyrochlore (Bi1.5ZnNb1.5O7) Nanoparticles Derived by Sol–Gel

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Here, we report the fabrication and characterization of crystalline cubic bismuth zinc niobate pyrochlore, Bi1.5ZnNb1.5O7, (BZN) nanoparticles. A novel sol–gel method is used for the synthesis of air-stable and precipitate-free diol-based sols of BZN which was dried at 150 °C and partially calcined at 350 °C/1 h to decompose organics and bring down the free energy barrier for crystallization. Annealed at 450–700 °C/1 h, BZN powder exhibited nanocrystalline morphology. The average BZN nanoparticle size were about 6, 60 and 85 nm for the samples annealed at 450, 600 and 700 °C/1 h, respectively as observed by transmission electron microscope (TEM). The crystallinity and phase formation of the as synthesized nanoparticles were confirmed by the selected-area electron diffraction (SAED), X-ray diffraction (XRD) and high resolution TEM (HRTEM) analysis. Energy-dispersive X-ray spectroscopy (EDX) analysis demonstrated that stoichiometric Bi1.5ZnNb1.5O7 was formed.

Document Type: Research Article


Publication date: 2009-09-01

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  • ADVANCED SCIENCE LETTERS is an international peer-reviewed journal with a very wide-ranging coverage, consolidates research activities in all areas of (1) Physical Sciences, (2) Biological Sciences, (3) Mathematical Sciences, (4) Engineering, (5) Computer and Information Sciences, and (6) Geosciences to publish original short communications, full research papers and timely brief (mini) reviews with authors photo and biography encompassing the basic and applied research and current developments in educational aspects of these scientific areas.
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