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Erschienen in:
14.12.2017
A new niobate-based CaO–2CuO–Nb2O5 microwave dielectric ceramic composite for LTCC applications
Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 6/2018
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Abstract
A novel CaO–2CuO–Nb2O5 (CCN) ceramic composite was prepared by the solid-state reaction method in the temperature range of 810–890 °C. Typically, the CCN sintered at 870 °C exhibited the excellent microwave properties of ε
r
= 15.7, Q × f = 28,700 GHz, τ
f
= − 38.4 ppm/°C. The τ
f
of CCN was turned to be near zero by adding TiO2, while the ε
r
increased slightly and the Q × f decreased. The 0.91CCN–0.09TiO2 ceramic sintered at 920 °C showed modified properties of ε
r
= 16.9, Q × f = 21,500 GHz, τ
f
= − 1.6 ppm/°C, which shows potential in LTCC applications.