Abstract
Microwave dielectric properties and microstructure of 0.98CeO 2–0.02CaTiO 3 ceramics with B 2O 3 additions prepared with the conventional solid-state route have been investigated. 0.98CeO 2–0.02CaTiO 3 ceramics can be sintered at 1290 °C for 4 h due to the sintering aid effect resulting from the B 2O 3 additions. At sintering temperature of 1380 °C for 4 h, 0.98CeO 2–0.02CaTiO 3 ceramics with 0.25 wt% B 2O 3 addition possess a dielectric constant ( ɛ r) of 21.3, a Q × f value of 60,000 (at 8 GHz) and a temperature coefficient of resonant frequency ( τ f ) of −41 ppm/°C.
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