Synthesis and Characterization of Barium Titanate by Solid-State Reaction

Abstract:

Solid-state reactions were used to synthesize pure and doped barium titanate powder. Barium titanate formation with tetragonal perovskite structure was detected by X-ray diffraction and occurred at a temperature above 700°C for pure powder and 500°C for doped powder. However, quite crystalline samples were observed only at 800oC and 600°C for pure and doped barium titanate, respectively, what made the refinement of the synthesized powders possible. They were characterized by X-ray diffraction and Fourier transform infrared spectroscopy and scanning electron microscopy. X-ray diffraction data was analyzed by using the Fullprof Rietveld refinement approach, Thompson-Cox-Hastings pseudo-Voigt with function. The refinement method was effective in the study of the temperature influence on the microstructure of the analysis of pure and doped barium titanate.

• Periodical: Materials Science Forum (Volume 802)
• Pages: 285-290
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.802.285
• Online since: December 2014
• Authors: Mônica C. de Andrade*, Geysa N. Carneiro, Elizabeth L. Moreira, Jorge C. Araújo, Valéria C.A. Moraes
• Keywords: Barium Titanate, Crystallite Size, Solid-State Reaction

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