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A modified method for barium titanate nanoparticles synthesis |
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| Authors: | R. Ashiri Ali Nemati S. Sanjabi |
| Affiliation: | a Department of Materials Science and Engineering, Dezful Branch, Islamic Azad University, P.O. Box 313, Dezful, Iran b Department of Materials Science and Engineering, Sharif University of Technology, P.O. Box 11365-9466, Tehran, Iran c Solid State Lasers Research Group, Laser and Optics Research School, NSTRI, P.O. Box 11365-8486, Tehran, Iran d Nanomaterials Group, Department of Materials Engineering, Tarbiat Modares University, P.O. Box 14115-143, Tehran, Iran |
| Abstract: | In this research, a modified, cost effective sol-gel procedure applied to synthesize BaTiO3 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 BaTiO3 nanoparticles were synthesized at low temperature and in short time span (1 h calcination at 800 °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 °C, which might be an indication of being nanosized. |
| Keywords: | A. Ceramics A. Nanostructures B. Sol-gel chemistry C. Electron microscopy D. Ferroelectricity |
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