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- Title
Effects of Acetic Acid on the Crystallization Temperature of Sol-Gel-Derived MgO Nano-Powders and Thin Films.
- Authors
Jin Young Kim; Hyun Suk Jung; Kug Sun Hong
- Abstract
The influences of acetic acid addition to Mg-methoxide on the stability of the precursor and the crystallization behavior of solgel-derived MgO nano-powders and thin films were investigated using X-ray powder diffraction, transmission electron microscopy, Fourier-transformed infrared spectroscopy, and therm- ogravimetry. The addition of acetic acid enhanced the stability of the alkoxide against precipitation. Moreover, during postheat treatment of the gel powders treated with acetic acid, a significantly lowered crystallization temperature (250 °C) was observed as compared to the untreated counterpart (350 °C). The low-temperature crystallization of MgO. induced by the modification of Mg-methoxide with acetic acid, was related to the decomposition of organics at a lower temperature. These results could be explained in terms of the decrease of the O-R bond strength depending on the increase in the alkyl group size. MgO thin films having a high degree of crystallinity were successfully obtained from the Mg-methoxide treated with acetic acid at 300 °C. The low-temperature crystallization of sol-gel-derived MgO thin films showed the feasibility for their application as a protective layer in alternative current plasma display panel cells.
- Subjects
ACETIC acid; TEMPERATURE; OPTICAL diffraction; THERMAL properties; MAGNESIUM compounds; POWDER metallurgy
- Publication
Journal of the American Ceramic Society, 2005, Vol 88, Issue 3, p784
- ISSN
0002-7820
- Publication type
Article
- DOI
10.1111/j.1551-2916.2005.00119.x