Key Words:BaF2; nanocrystalline powder; size control; mixed solvent; precipitation
Abstract:The BaF2 nanocrystalline powders with different particle sizes were synthesized by precipitation in the ethanol-water mixed solvents. The particle size and morphology of BaF2 powder were characterized by TEM, FSEM and XRD. The influence of the aging time and the volume ratio of water to ethanol on the particle size and morphology of BaF2 powders were studied. The results indicate that the size of BaF2 powders decreases with increasing volume ratio of ethanol to water of mixed solvents. The particle size of BaF2 nano-powder could be controlled according to the linear relationship between the reciprocal of BaF2 particle size and the reciprocal of dielectric constant of mixed solvents.
Volume:23
Issue:7
Translation or Not:no