Dielectric ceramics with TiO 2 rich compositions in Bi 2O 3–TiO 2 system

Dielectric ceramics with TiO 2 rich compositions in the system of Bi 2O 3·TiO 2 were investigated in order to reduce the temperature coefficient of TiO 2. It was observed that τ ε became opposite in the composition of Bi 2O 3·2TiO 2 while ε r was near 120 and almost frequency independent. Bi 4Ti 3O...

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Bibliographic Details
Published inMaterials letters Vol. 39; no. 1; pp. 18 - 21
Main Authors Xu, Z.Y., Chen, X.M.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 1999
Subjects
Bi 2O 3
Ceramics
TiO 2
Ceramics
Bi 2O 3
TiO 2
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Summary:Dielectric ceramics with TiO 2 rich compositions in the system of Bi 2O 3·TiO 2 were investigated in order to reduce the temperature coefficient of TiO 2. It was observed that τ ε became opposite in the composition of Bi 2O 3·2TiO 2 while ε r was near 120 and almost frequency independent. Bi 4Ti 3O 12 phase was observed in Bi 2O 3·2TiO 2 and it played an important role in modifying the temperature coefficient of dielectric constant of TiO 2 based ceramics.
ISSN:0167-577X
1873-4979
DOI:10.1016/S0167-577X(98)00208-0