Author： Chowdhury A. Kumar J.
Publisher： Maney Publishing
ISSN： 1743-2847
Source： Materials Science and Technology, Vol.22, Iss.10, 2006-10, pp. : 1249-1254
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Abstract
Mg oxide powder has been synthesised by sol–gel process via a novel non-alkoxide route. The precursor Mg oxalate gel was characterised by morphology, pore size distribution and differential thermal analysis, Fourier transformation infrared, TEM, SEM and X-ray diffraction analysis. The TEM studies on this system are reported for the first time depicting a unique morphology. A comparison in the morphology and the dielectric constant values of the sol–gel derived MgO powder was carried out with MgO powder obtained by Mg ribbon oxidation process. The sol–gel derived MgO powder was characterised by dielectric constant measurement in the compacted form and it was observed to exhibit a dielectric constant value, quite matching with the polycrystalline MgO in thin film form.
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