Synthesis of pure phase BiFeO3 powders by direct thermal decomposition of metal nitrates

Pure phase BiFeO3 powders were successfully synthesized by direct thermal decomposition of metal nitrates at 500°C. The as-prepared BiFeO3 had a perovskite structure which was studied using X-ray diffraction. The porous structures were investigated through scanning electron microscopy. Morphology of...

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Bibliographic Details
Published in:Ceramics international 2013-05, Vol.39, p.S221-S225
Main Authors: Wang, Lei, Xu, Jin-Bao, Gao, Bo, Bian, Liang, Chen, Xue-Ying
Format: Article
Language:English
Subjects:
C. Magnetic properties
C. Optical properties
Ceramics
D. Ferrites
Differential scanning calorimetry
Metal nitrates
Nanoparticles
Perovskite structure
Scanning electron microscopy
Synthesis
Thermal decomposition
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Summary:Pure phase BiFeO3 powders were successfully synthesized by direct thermal decomposition of metal nitrates at 500°C. The as-prepared BiFeO3 had a perovskite structure which was studied using X-ray diffraction. The porous structures were investigated through scanning electron microscopy. Morphology of BiFeO3 changed from micron-sized porous structures to nano-sized particles as NH3HCO3 was added. Furthermore, the mechanism of formation of BiFeO3 was also discussed through X-ray diffraction, thermogravimetry and differential scanning calorimetry. The optical absorption band gap of the micro-sized porous structure BiFeO3 is 1.8eV.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2012.10.066