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Synthesis of BiFeO3 by Wet Chemical Methods

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Abstract:

The synthesis of phase-pure BiFeO3 has been demonstrated by a chemical synthesis route as well as the solid-state method at 825°C. Polymeric BiFeO3 precursors were obtained from aqueous solutions of nitrate salts and carboxylic acids with and without ethylene glycol added as a polymerization agent. The polymeric precursors were shown to decompose above 200°C with successive nucleation and growth of BiFeO3 above 400°C. The phase purity of the product was shown to depend on the type of carboxylic acid used, and tartaric, malic, and maleic acids resulted in nanocrystalline phase-pure BiFeO3. The unit cell and Néel temperature of the bulk materials obtained by the two methods were in accord with previous reports.

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.1551-2916.2007.01937.x

Affiliations: Department of Materials Science and Engineering, Norwegian University of Science and Technology, 7491 Trondheim, Norway

Publication date: November 1, 2007

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