Colloid emulsion of nanosized strontium bismuth tantalate powder
Journal
Journal of the American Ceramic Society
Journal Volume
83
Journal Issue
5
Pages
1320-1322
Date Issued
2000
Author(s)
Saha S.K.
Abstract
A novel colloid-emulsion process has been used to synthesize nanosized strontium bismuth tantalate (SrBi2Ta2O9) particles. During calcination, the desired bismuth-layered structure phase develops at the expense of the pyrochlore phase. Calcining the precursor powder at 750¢XC for 2 h leads to the complete formation of single-phase layered-structured SrBi2Ta2O9. The powder that is formed consists of nanoparticles with a narrow size distribution and almost-spherical morphology. The crystallinity of the calcined powder increases as the calcination temperature and heating time increases. The developed colloid-emulsion process significantly reduces the SrBi2Ta2O9 particle size, in comparison to conventional process techniques, and results in a uniform microstructure of the obtained powder.
Type
journal article