Title :
Microstructural development and microwave dielectric properties of ZrTiO4-based ceramics
Author :
Azough, F. ; Freer, R.
Author_Institution :
Manchester Mater. Sci. Centre, Manchester Univ., UK
Abstract :
Ceramics of Zr0.8Sn0.2TiO4 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
Keywords :
crystal microstructure; dielectric properties of solids; ferroelectric materials; grain size; tin compounds; zirconium compounds; 5 GHz; Zr0.8Sn0.2TiO4; ceramics; cooling rate; dielectric properties; ferroelectrics; grain size; microstructure; microwave properties; partial ordering; structure; unit cell volume; Additives; Ceramics; Cooling; Dielectrics; Grain size; Optical microscopy; Powders; Transmission electron microscopy; X-ray diffraction; Zinc oxide;
Conference_Titel :
Applications of Ferroelectrics, 1990., IEEE 7th International Symposium on
Conference_Location :
Urbana-Champaign, IL
Print_ISBN :
0-7803-0190-0
DOI :
10.1109/ISAF.1990.200224
