High-K Dielectric Ceramics from Donor/Acceptor-Codoped (Ba1−xCax)(Ti1-yZry)O3 (BCTZ)

High-K Dielectric Ceramics from Donor/Acceptor-Codoped (Ba1−xCax)(Ti1-yZry)O3 (BCTZ)

(Ba1−xCax)(Ti1−yZry)O3 ceramics doped with various donors and acceptors were sintered in a reducing atmosphere and then annealed at different oxygen partial pressures. The dielectric maxima at the Curie point increased up to ∼30000 after reoxidation, depending on the grain size, the type of acceptor...

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Veröffentlicht in:Journal of the American Ceramic Society 1998-05, Vol.81 (5), p.1369-1373
Hauptverfasser: Hansen, Peter, Hennings, Detlev, Schreinemacher, Herbert
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Sprache:eng
Schlagworte:
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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container_issue 5
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container_title Journal of the American Ceramic Society
container_volume 81
creator Hansen, Peter
Hennings, Detlev
Schreinemacher, Herbert
description (Ba1−xCax)(Ti1−yZry)O3 ceramics doped with various donors and acceptors were sintered in a reducing atmosphere and then annealed at different oxygen partial pressures. The dielectric maxima at the Curie point increased up to ∼30000 after reoxidation, depending on the grain size, the type of acceptor, and the annealing conditions. The increase of the dielectric maxima seems to be correlated with oxidation of the grain boundaries. The dielectric properties show relaxation effects with increased frequency.
doi_str_mv 10.1111/j.1151-2916.1998.tb02494.x
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subjects Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Electrotechnical and electronic ceramics
Exact sciences and technology
Technical ceramics
title High-K Dielectric Ceramics from Donor/Acceptor-Codoped (Ba1−xCax)(Ti1-yZry)O3 (BCTZ)
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