Phases in La2O3 and NiO doped (Zr, Sn)TiO4 microwave dielectric ceramics

Dielectric ceramics with compositions in the ZrO2-SnO2-TiO2 system containing La2O3 and NiO as sintering aids were prepared and studied by XRD, XPS, SEM, EDS, and microwave dielectric measurements. Ceramics prepared with a deflocculated slurry using a Dyno-Mill, and sintered at 1370 C, exhibit very...

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Bibliographic Details
Published in:Journal of the European Ceramic Society 1999-01, Vol.19 (6-7), p.1095-1099
Main Authors: HOUIVET, D, EL FALLAH, J, HAUSSONNE, J.-M
Format: Article
Language:English
Subjects:
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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Summary:Dielectric ceramics with compositions in the ZrO2-SnO2-TiO2 system containing La2O3 and NiO as sintering aids were prepared and studied by XRD, XPS, SEM, EDS, and microwave dielectric measurements. Ceramics prepared with a deflocculated slurry using a Dyno-Mill, and sintered at 1370 C, exhibit very good microwave dielectric characteristics: dielectric constant = 37 and Q-factor up to 62000 at 4 GHz. A matrix phase with at least two or three different secondary phases was seen, depending on the grinding media used (zircon or Mg stabilised ZrO2 balls). 12 refs.
ISSN:0955-2219
1873-619X
DOI:10.1016/s0955-2219(98)00381-1