Nanocomposite Versus Sol-Gel Processing of Barium Magnesium Tantalate

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Barium magnesium tantalate, Ba(Mg1/3Ta2/3)O3 (BMT) was prepared by a nanocomposite processing route. Density, particle size and microstructure were determined on the BMT nanocomposite pellets sintered at various temperatures and compared with those derived from a sol-gel process. BMT ceramics prepared by the nanocomposite process showed fine grains of about 2 μm and higher densities compared to that of BMT prepared by sol-gel processing, apparently due to a decreased temperature interval between crystallization and densification in the nanocomposite process.

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