The oxidation states of copper in Sb, Cu doped Ba0.9Sr0.1TiO3 ceramics

Studies were made of the stability of copper oxidation states in the sintering process and the dependence of Cu2+ concentration on the copper content of donor doped barium titanate ceramics. XPS spectra were obtained for 1.2 wt% Cu doped barium strontium titanate sintered at 1350 C with holding time...

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Bibliographic Details
Published in:Journal of materials science letters 2001-01, Vol.20 (5), p.419-422
Main Authors: MEDVECKY, L, BRIANCIN, J, TRPCEVSKA, J, PELIKAN, P, BASTL, Z
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Dielectric, piezoelectric, ferroelectric and antiferroelectric materials
Dielectrics, piezoelectrics, and ferroelectrics and their properties
Electrotechnical and electronic ceramics
Exact sciences and technology
Niobates, titanates, tantalates, pzt ceramics, etc
Physics
Technical ceramics
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Summary:Studies were made of the stability of copper oxidation states in the sintering process and the dependence of Cu2+ concentration on the copper content of donor doped barium titanate ceramics. XPS spectra were obtained for 1.2 wt% Cu doped barium strontium titanate sintered at 1350 C with holding times of zero and 1 h. The change in the oxidation states of copper was examined by EPR spectroscopy at room temperature and 100 C. The dependence between the fraction of the cubic phase and the Cu concentration in the barium strontium titanate ceramics doped with 0, 0.02, and 0.64 wt% Cu was examined by XRD analysis. 25 refs.
ISSN:0261-8028
DOI:10.1023/A:1010990128283