Sintering and dielectric properties of Sr(Bi2Ta2)0.95Ti0.2O9 ceramics

TiO2 was used to substitute the Bi2O3 and Ta2O5 sites of SrBi2Ta2O9 ceramics to form Sr(Bi2Ta2)0.95Ti0.2O9 composition. X-ray patterns changed as the sintering temperatures increased. At lower sintering temperatures of 1200-1250 C, the Sr(Bi2Ta2)0.95Ti0.2O9 ceramics reveal a two-phase structure, bar...

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Veröffentlicht in:	Materials letters 2004-03, Vol.58 (7-8), p.1302-1306
Hauptverfasser:	Chan, C-C, Cheng, P-S, Yang, C-F
Format:	Artikel
Sprache:	eng
Online-Zugang:	Volltext
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Zusammenfassung:	TiO2 was used to substitute the Bi2O3 and Ta2O5 sites of SrBi2Ta2O9 ceramics to form Sr(Bi2Ta2)0.95Ti0.2O9 composition. X-ray patterns changed as the sintering temperatures increased. At lower sintering temperatures of 1200-1250 C, the Sr(Bi2Ta2)0.95Ti0.2O9 ceramics reveal a two-phase structure, bar-typed grains and disc-typed grains coexist. When 1300 C is used as the sintering temperature, only the bar-typed grains are revealed. The sintering temperatures also have large influences on the maximum dielectric constants and the Curie temperatures of Sr(Bi2Ta2)0.95Ti0.2O9 ceramics. 8 refs.
ISSN:	0167-577X
DOI:	10.1016/j.matlet.2003.10.003