Low-temperature synthesis of nanosized bismuth ferrite by the soft chemical method

被引：38
|
作者：
Aguiar, E. C. [1 ]
Ramirez, M. A. [2 ]
Moura, F. [3 ]
Varela, J. A. [1 ]
Longo, E. [1 ]
Simoes, A. Z. [2 ]
机构：
[1] Univ Estadual Paulista, UNESP, Inst Quim, BR-14800900 Araraquara, SP, Brazil
[2] Univ Estadual Paulista, UNESP, Fac Engn Guaratingueta, BR-12516410 Guaratingueta, SP, Brazil
[3] Univ Fed Itajuba, Unifei, BR-3590037 Itabira, MG, Brazil
来源：
CERAMICS INTERNATIONAL | 2013年 / 39卷 / 01期
基金：
巴西圣保罗研究基金会;
关键词：
Ceramics; Chemical syntheses; Powder metallurgy; X-Ray diffraction; BIFEO3; THIN-FILMS; DIELECTRIC-PROPERTIES; RIETVELD ANALYSIS;
D O I：
10.1016/j.ceramint.2012.06.014
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
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. BiFeO3 (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 BiFeO3 structure with a rhombohedral distorted perovskite structure was obtained by heating at 850 degrees 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 degrees C for 4 hours was verified by FE-SEM analyses. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：13 / 20
页数：8
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