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.
Journal of Materials Science: Materials in Electronics – Springer Journals
Published: Dec 14, 2017
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