A modified method for barium titanate nanoparticles synthesis

作者：Ashiri R^*; Nemati Ali; Ghamsari M Sasani; Sanjabi S; Aalipour M

来源：Materials Research Bulletin, 2011, 46(12): 2291-2295.

DOI：10.1016/j.materresbull.2011.08.055

• Ceramics
• Nanostructures
• Sol-gel chemistry
• Electron microscopy
• Ferroelectricity

In this research, a modified, cost effective sal-gel procedure applied to synthesize BaTiO(3) nanoparticles. XRD and electron microscopy (SEM and TEM) applied for microstructural characterization of powders. The obtained results showed that the type of precursors, their ratio and the hydrolysis conditions had a great effect on time, temperature and therefore the costs of the synthesis process. By selection, utilization of optimized precursor's type, hydrolysis conditions, fine cubic BaTiO(3) nanoparticles were synthesized at low temperature and in short time span (1 h calcination at 800 degrees C). The proposed procedure seems to be more preferable for mass production.
The result indicated that the polymorphic transformation to tetragonal (ferroelectric characteristic) occurred at 900 degrees C, which might be an indication of being nanosized.

• 出版日期2011-12