Synthesis of ultra low temperature sinterable Na2Zn5(MoO4)6 ceramics and the effect of microstructure on microwave dielectric properties

Phase pure Na2Zn5(MoO4)6 ceramic is prepared by solid state ceramic route and the structural characterisations have been done using powder X-ray diffraction and laser Raman spectroscopy. Na2Zn5(MoO4)6 ceramics exhibited a maximum density of 3.73g/cm3 at 590°C together with ԑr=8.1, Qu×f=35,800GHz and...

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Bibliographic Details
Published in:Scripta materialia 2017-04, Vol.132, p.1-4
Main Authors: Dhanya, J., Basiluddeen, A.V., Ratheesh, R.
Format: Article
Language:English
Subjects:
Electronic ceramics
Energy dispersive X-ray spectroscopy
Grain growth
Liquid-phase sintering
Ultra low temperature co-fired ceramic
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Summary:Phase pure Na2Zn5(MoO4)6 ceramic is prepared by solid state ceramic route and the structural characterisations have been done using powder X-ray diffraction and laser Raman spectroscopy. Na2Zn5(MoO4)6 ceramics exhibited a maximum density of 3.73g/cm3 at 590°C together with ԑr=8.1, Qu×f=35,800GHz and τf=−95ppm/°C at microwave frequencies. Scanning electron micrographs of the sintered samples show exaggerated grain growth, which is correlated with the microwave dielectric properties. The chemical compatibility between Na2Zn5(MoO4)6 ceramic and metal electrode has been ascertained using energy dispersive X-ray spectroscopy. [Display omitted]
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2017.01.017