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

页码：13 / 20

页数：8

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