Study on the dielectric properties of oxide-doped Ba(Ti,Sn)O3 ceramics prepared from ultrafine powder

Ultrafine BaTiO3 and BaSnO3 powders were prepared by thermal decomposition of oxalates through synthesis by co-precipitation; Dy2O3, Nb2O5 and ZnO, used as dopants, were added to the main constituents, and then the batches were mixed until they became homogeneous. Careful treatment was necessary in...

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Bibliographic Details
Published in:Journal of materials science 1993-01, Vol.28 (24), p.6617-6621
Main Authors: Bao, Manling, Li, Weidong, Zhu, Peinan
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Electrotechnical and electronic ceramics
Exact sciences and technology
Technical ceramics
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Summary:Ultrafine BaTiO3 and BaSnO3 powders were prepared by thermal decomposition of oxalates through synthesis by co-precipitation; Dy2O3, Nb2O5 and ZnO, used as dopants, were added to the main constituents, and then the batches were mixed until they became homogeneous. Careful treatment was necessary in later stages of the process of ceramic making. The dielectric properties were measured and it was found that high epsilon, low tan delta and low d(epsilon)/d(t) were characteristics of these ceramics. The results could be explained by the effects of peak shifting, broadening and grain-size inhibition. The relationship between composition, structure and properties is discussed. 9 refs.
ISSN:0022-2461
1573-4803
DOI:10.1007/BF00356405