Synthesis of Multiferroic BiFeO₃ Powders by Sol-Gel Auto-Combustion

Abstract:

Crystalline multiferroic BiFeO₃ powders were directly synthesized by sol-gel auto-combustion method. The gels, derived from the solutions of 2-methoxyethane, metal nitrate and citric acid, exhibited the self-propagating combustion behaviors at ambient temperature when it is ignited in air. After auto-combustion, the dried gels transformed into crystalline BiFeO₃ powders and no further calcination was needed. The nature of auto-combustion was ascribed to heat-induced redox between NH₄NO₃ and carboxyl group. The TG-DTA was carried out to study the auto-combustion of dried gels. The synthesized powders were characterized by XRD and SEM techniques.

• Periodical: Advanced Materials Research (Volume 412)
• Pages: 99-102
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.412.99
• Online since: November 2011
• Authors: Xi Wei Qi, He Ji Xu, Xiao Yan Zhang, Jian Quan Qi
• Keywords: Auto-Combustion, BiFeO₃ Powders, Sol-Gel (SG)

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