Microstructural development and microwave dielectric properties of ZrTiO/sub 4/-based ceramics
international symposium on applications of ferroelectrics（1990）
摘要
Ceramics of Zr/sub 0.8/Sn/sub 0.2/TiO/sub 4/ have been prepared by the mixed oxide route using additives of ZnO. The cooling rate was found to have a profound effect on structure and dielectric properties. The unit cell volume decreased in size and the grain size increased as the cooling rate was reduced. On rapid cooling the cations were randomly distributed within the lattice. With moderate cooling there was the initiation of ordering, but with slow cooling there was partial ordering of the cations along the a direction. The dielectric value increased with cooling rate to a maximum value of 10200 at 5 GHz. >
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关键词
ceramics,grain size,ferroelectric materials,partial ordering,x ray diffraction,partial order,structure,optical microscopy,zinc oxide,additives,dielectric properties,dielectrics,transmission electron microscopy,microstructure,microstructures,powders
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