Solid-State Preparation of BaTiO3-Based Dielectrics, Using Ultrafine Raw Materials

BaTiO3 and Ba(Ti,Zr)O3 dielectric powders have been prepared from submicrometer BaCO3, TiO2, and ZrO2. By use of submicrometer BaCO3 the intermediate formation of Ba2TiO4 second phase can be widely suppressed. Monophase perovskites of BaTiO3 were already formed at 900°C and Ba(Ti,Zr)O3 at 1050°C. Ag...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 2001-12, Vol.84 (12), p.2777-2782
Main Authors: Hennings, Detlev F. K., Schreinemacher, B. Seriyati, Schreinemacher, Herbert
Format: Article
Language:English
Subjects:
Applied sciences
barium titanate
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Chemistry
Colloidal state and disperse state
Condensed matter: electronic structure, electrical, magnetic, and optical properties
dielectric materials/properties
Dielectric, piezoelectric, ferroelectric and antiferroelectric materials
Dielectrics, piezoelectrics, and ferroelectrics and their properties
Electrotechnical and electronic ceramics
Exact sciences and technology
General and physical chemistry
Niobates, titanates, tantalates, pzt ceramics, etc
Physics
Powders
Technical ceramics
zirconium/zirconium compounds
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Summary:BaTiO3 and Ba(Ti,Zr)O3 dielectric powders have been prepared from submicrometer BaCO3, TiO2, and ZrO2. By use of submicrometer BaCO3 the intermediate formation of Ba2TiO4 second phase can be widely suppressed. Monophase perovskites of BaTiO3 were already formed at 900°C and Ba(Ti,Zr)O3 at 1050°C. Aggregates of very small subgrains could be easily disintegrated to particle sizes
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1151-2916.2001.tb01094.x