Aguiar, E. C. [UNESP]Ramirez, M. A. [UNESP]Moura, F.Varela, José Arana [UNESP]Longo, Elson [UNESP]Simões, A. Z. [UNESP]2014-05-272014-05-272013-01-01Ceramics International, v. 39, n. 1, p. 13-20, 2013.0272-8842http://hdl.handle.net/11449/74162This 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.13-20engA. CeramicsB. Chemical synthesesB. Powder metallurgyC. X-Ray diffractionBismuth ferritesChemical synthesisField emission scanning electron microscopyFourier transform infraredFT-IR spectrumHigh temperatureIron nitratesLow temperature synthesisMetal-oxygen bondsNano powdersPerovskite structuresPolymeric precursor methodsRaman modesSoft chemical methodStructural distortionsUltra-violetXRDXRD patternsBismuthFerriteField emission microscopesIron researchLow temperature effectsNanostructured materialsOxygenPerovskitePowder metallurgyPowder metalsRaman spectroscopyTemperatureX ray diffractionX ray diffraction analysisBismuth compoundsArtigo10.1016/j.ceramint.2012.06.014WOS:000315246300002Acesso restrito2-s2.0-848690820462-s2.0-848623112933573363486614904