Kinetic-Study and Modeling of Coarsening in a BaTiO3 Powder at 850-Degrees-C

Valdivieso F; Pijolat M; Magnier C; Soustelle M

Solid State Ionics, Vol.83, No.3-4, 283-292, 1996

DOI10.1016/0167-2738(95)00253-7 Export Citation

Kinetic-Study and Modeling of Coarsening in a BaTiO3 Powder at 850-Degrees-C

Valdivieso F, Pijolat M, Magnier C, Soustelle M

The influence of the gaseous atmosphere and the Ba/Ti ratio on the decrease in specific surface area in a BaTiO3 powder was studied at 850 degrees C. A model involving elementary steps and the BaTiO3 point defects was proposed to quantitatively account for the accelerating effect of the water vapour pressure and the Ba/Ti ratio.

Keywords:BARIUM-TITANATE CERAMICS;DIELECTRIC-PROPERTIES;DEFECT CHEMISTRY;UNDOPED BATIO3;STOICHIOMETRY;SOLUBILITY;STABILITY