Low-temperature synthesis of nanosized bismuth ferrite by the soft chemical method
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This paper describes research on a simple low-temperature synthesis route to prepare bismuth ferrite nanopowders by the polymeric precursor method using bismuth and iron nitrates. BiFeO 3 (BFO) nanopowders were characterized by means of X-ray diffraction analyses, (XRD), Fourier transform infrared (FT-IR) spectroscopy, Raman spectroscopy (Raman), thermogravimnetric analyses (TG-DTA), ultra-violet/vis (UV/Vis) and field emission scanning electron microscopy (FE-SEM). XRD patterns confirmed that a pure perovskite BiFeO 3 structure with a rhombohedral distorted perovskite structure was obtained by heating at 850 °C for 4 hours. Typical FT-IR spectra for BFO powders revealed the formation of a perovskite structure at high temperatures due to a metal-oxygen bond while Raman modes indicated oxygen octahedral tilts induced by structural distortion. A homogeneous size distribution of BFO powders obtained at 850 °C for 4 hours was verified by FE-SEM analyses. © 2012 Elsevier Ltd and Techna Group S.r.l.
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A. Ceramics, B. Chemical syntheses, B. Powder metallurgy, C. X-Ray diffraction, Bismuth ferrites, Chemical synthesis, Field emission scanning electron microscopy, Fourier transform infrared, FT-IR spectrum, High temperature, Iron nitrates, Low temperature synthesis, Metal-oxygen bonds, Nano powders, Perovskite structures, Polymeric precursor methods, Raman modes, Soft chemical method, Structural distortions, Ultra-violet, XRD, XRD patterns, Bismuth, Ferrite, Field emission microscopes, Iron research, Low temperature effects, Nanostructured materials, Oxygen, Perovskite, Powder metallurgy, Powder metals, Raman spectroscopy, Temperature, X ray diffraction, X ray diffraction analysis, Bismuth compounds
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Ceramics International, v. 39, n. 1, p. 13-20, 2013.
