2014 | OriginalPaper | Buchkapitel
Thermal Evolution of Mixed Oxides of Zirconia-Silica Prepared by Sol-gel Route
verfasst von : Surbhi Saruchi, Sushil Kumar
Erschienen in: Physics of Semiconductor Devices
Verlag: Springer International Publishing
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The thermal evolution of nanodimensional mixed metal oxides prepared by sol-gel route through structural characterization is reported. ZrO
2
-SiO
2
sol-gel powders were produced using zirconium propoxide and tetraethoxysilane (TEOS) as precursors. The gel was dried at 110 °C for 6 h in air. After drying, thermal treatment of as prepared samples was carried out at 650, 875 and 1,100 °C for 4 h. The crystallization of samples and the crystalline phases evolved are related to annealing temperature. The phases of zirconia and silica are identified, and the lattice parameters are calculated using X-ray diffraction. The results suggest that annealing at higher temperature enhances the crystallinity and hence crystallite size of nanodimensional samples.