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Journal of Materials Science: Materials in Electronics
Erschienen in: Journal of Materials Science: Materials in Electronics 9/2015

01.09.2015

Microwave dielectric properties of Ba(Co0.56Y0.04Zn0.35)1/3Nb2/3+x O3(x = −0.004 ~ 0.008) ceramics

verfasst von: Bin Tang, Zi-xuan Fang, Ying-xiang Li, Xiao Zhang, Shu-ren Zhang

Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 9/2015

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Abstract

The influence of B″-site nonstoichiometry on the crystal structures and microwave dielectric properties of Ba(Co0.56Y0.04Zn0.35)1/3Nb2/3+x O3(x = −0.004 ~ 0.008) ceramics were prepared by the solid-state reaction. The main phase in the sintered ceramics was crystallized as Ba(Co1/3Nb2/3)O3–Ba(Zn1/3Nb2/3)O3(BCZN). Ba5Nb4O15 as secondary phase was observed with x = 0.008. The SEM photographs of optimally nonstoichiometric ceramics sintered at 1350 °C for 20 h showed compact microstructure with crystal grains in dense contact. The dielectric properties and microstructures of BCZN ceramics were very sensitive to the nonstoichiometry. The nonstoichiometric (x = 0.004) ceramics sintered in air at 1350 °C for 20 h exhibited the best microwave properties of εr = 34.8, Q × f = 76,469 GHz, τf ≈ 2.6 ppm/°C.
Vorheriger Artikel Dielectric and impedance spectroscopy of (Ba, Sm)(Ti, Fe)O3 system in the low-medium frequency range
Nächster Artikel Ferroic properties of Fe-doped and Cu-doped K0.45Na0.49Li0.06NbO3 ceramics

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Metadaten
Titel
Microwave dielectric properties of Ba(Co0.56Y0.04Zn0.35)1/3Nb2/3+x O3(x = −0.004 ~ 0.008) ceramics
verfasst von
Bin Tang
Zi-xuan Fang
Ying-xiang Li
Xiao Zhang
Shu-ren Zhang
Publikationsdatum
01.09.2015
Verlag
Springer US
Erschienen in
Journal of Materials Science: Materials in Electronics / Ausgabe 9/2015
Print ISSN: 0957-4522
Elektronische ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-015-3256-0

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