Low-temperature synthesis of nanosized bismuth ferrite by the soft chemical method
MetadataShow full item record
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.
How to cite this document
Showing items related by title, author, creator and subject.
Preoperative combined with intraoperative skin-surface warming avoids hypothermia caused by general anesthesia and surgery Vanni, Simone Maria D'Angelo ; Braz, José Reinaldo Cerqueira ; Módolo, Norma Sueli Pinheiro ; Amorim, Rosa Beatriz ; Rodrigues Júnior, Geraldo Rolim (Journal of Clinical Anesthesia, 2003) [Artigo]Study Objectives: To evaluate the effects of intraoperative skin-surface warming with and without 1 hour of preoperative warming, in preventing intraoperative hypothermia, and postoperative hypothermia, and shivering, and ...
Nonthermal activation of transient receptor potential vanilloid-1 channels in abdominal viscera tonically inhibits autonomic cold-defense effectors Steiner, Alexandre A.; Turek, Victoria F.; Almeida, Maria C. ; Burmeister, Jeffrey J.; Oliveira, Daniela L.; Roberts, Jennifer L.; Bannon, Anthony W.; Norman, Mark H.; Louis, Jean-Claude; Treanor, James J.S. et al. (Journal of Neuroscience, 2007) [Artigo]An involvement of the transient receptor potential vanilloid (TRPV) 1 channel in the regulation of body temperature (T b) has not been established decisively. To provide decisive evidence for such an involvement and determine ...
Baffi, Milla A. ; Tobal, Thaise ; Lago, João Henrique Ghilardi; Boscolo, Maurício ; Gomes, Eleni ; Da-Silva, Roberto (Applied Biochemistry and Biotechnology, 2013) [Artigo]Microbial β-glucosidases have been used for the enhancement of wine aroma. Nevertheless, few enzymes are active in the conditions of winemaking. In this work, the production of a β-glucosidase by an Aureobasidium pullulans ...