S. Trolier-McKinstry—contributing editor
Thermal Decomposition of Degassed Barium Titanyl Oxalate: In Comparison to the Solid-State Reaction Mechanism
Article first published online: 27 SEP 2010
© 2010 The American Ceramic Society
Journal of the American Ceramic Society
Volume 94, Issue 1, pages 59–65, January 2011
How to Cite
Jung, W.-S., Hong, C.-H., Min, B.-K., Park, J. and Yoon, D.-H. (2011), Thermal Decomposition of Degassed Barium Titanyl Oxalate: In Comparison to the Solid-State Reaction Mechanism. Journal of the American Ceramic Society, 94: 59–65. doi: 10.1111/j.1551-2916.2010.04064.x
This study was supported by Samsung Fine Chemicals Co. Ltd.
- Issue published online: 5 JAN 2011
- Article first published online: 27 SEP 2010
- Manuscript No. 27953. Received May 6, 2010; approved July 6, 2010.
This study examined the formation of BaTiO3 from degassed barium titanyl oxalate (degassed BTO), which was heat treated at 500°C for 2 h followed by 20 min of aqueous milling, upon further heating. The evolution of BaCO3, Ti-based interphase and BaTiO3 at various temperatures was examined by X-ray diffraction, high-resolution scanning transmission electron microscopy, and electron energy loss spectroscopy. When the degassed BTO was exposed to an aqueous milling, significant amounts of needle-shaped BaCO3 crystals formed preferentially, which made this system similar to that of a solid-state reaction. However, the formation mechanism of BaTiO3 observed in this study was found to be different from that of a solid-state reaction due to the different nature of the Ti-based phase.