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Erschienen in: Journal of Materials Science: Materials in Electronics 23/2019

06.11.2019

Structure refinement and impedance analysis of Ba0.85Ca0.15Zr0.10Ti0.90O3 ceramics sintered in air and nitrogen

verfasst von: Ku Noor Dhaniah Ku Muhsen, Rozana Aina Maulat Osman, Mohd Sobri Idris

Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 23/2019

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Abstract

Ba0.85Ca0.15Zr0.10Ti0.90O3 ceramics prepared in air (BCZTair) and nitrogen (BCZTN2) exhibit significant changes on the unit cell parameters and volume. BCZTair ceramic has higher dielectric constant, εr = 4805, than BCZTN2 ceramic, εr = 4771. BCZTN2 that was sintered in N2 gas was expected to contain oxygen vacancies which might create a high-resistivity blocking layer at the grain boundaries which give similar behaviour as ferroelectric polarization disappearance hence reduce the dielectric constant. BCZTair deviated from the Curie–Weiss law with ΔT = 17 which is higher than BCZTN2 with ΔT = 14 represents a characteristic of relaxor ferroelectric behaviour with diffused characteristic. The value of γ for both samples represents normal ferroelectrics even the γ for BCZTN2 was slightly higher with γ = 1.6334 than BCZTair with γ = 1.6146.

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Metadaten
Titel
Structure refinement and impedance analysis of Ba0.85Ca0.15Zr0.10Ti0.90O3 ceramics sintered in air and nitrogen
verfasst von
Ku Noor Dhaniah Ku Muhsen
Rozana Aina Maulat Osman
Mohd Sobri Idris
Publikationsdatum
06.11.2019
Verlag
Springer US
Erschienen in
Journal of Materials Science: Materials in Electronics / Ausgabe 23/2019
Print ISSN: 0957-4522
Elektronische ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-019-02433-3

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