The relationship between the microstructure and microwave dielectric properties of zirconium titanate ceramics

ZrTiO4 ceramics were prepared by the mixed oxide route using small additions of ZnO, Y2O3 or CuO. Specimens were sintered mainly at 1400 C and cooled at various rates: water-quench, air-quench, 300 C/h, 120 C/h, 6 C/h and 1 C/h. The calcined powders and sintered specimens were characterised using XR...

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Veröffentlicht in:	Journal of materials science 1996-05, Vol.31 (10), p.2539-2549
Hauptverfasser:	AZOUGH, F, FREER, R, WANG, C.-L, LORIMER, G. W
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Condensed matter: structure, mechanical and thermal properties Defects and impurities in crystals microstructure Dielectric properties of solids and liquids Dielectric, piezoelectric, ferroelectric and antiferroelectric materials Dielectrics, piezoelectrics, and ferroelectrics and their properties Exact sciences and technology Niobates, titanates, tantalates, pzt ceramics, etc Permittivity (dielectric function) Physics Structure of solids and liquids crystallography
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Beschreibung
Zusammenfassung:	ZrTiO4 ceramics were prepared by the mixed oxide route using small additions of ZnO, Y2O3 or CuO. Specimens were sintered mainly at 1400 C and cooled at various rates: water-quench, air-quench, 300 C/h, 120 C/h, 6 C/h and 1 C/h. The calcined powders and sintered specimens were characterised using XRD and the sintered specimens were examined using SEM, EDS and TEM. In addition, high frequency dielectric measurements were performed. The effect of factors e.g. ordering, impurities, oxygen vacancies and grain boundary phases are discussed. 41 refs.
ISSN:	0022-2461 1573-4803
DOI:	10.1007/bf00687279