Abstract
The effects of BaCu(B 2O 5) additives on the sintering temperature and microwave dielectric properties of (Mg 0.7Zn 0.3) 0.95Co 0.05TiO 3 ceramics were investigated. The (Mg 0.7Zn 0.3) 0.95Co 0.05TiO 3 ceramics were not able to be sintered below 1000 °C. However, when BaCu(B 2O 5) were added, they were sintered below 1000 °C and had the good microwave dielectric properties. It was suggested that a liquid phase with the composition of BaCu(B 2O 5) was formed during the sintering and assisted the densification of the (Mg 0.7Zn 0.3) 0.95Co 0.05TiO 3 ceramics at low temperature. BaCu(B 2O 5) powders were produced and used to reduce the sintering temperature of the (Mg 0.7Zn 0.3) 0.95Co 0.05TiO 3 ceramics. Good microwave dielectric properties of Q × f = 35,000 GHz, ɛ r = 18.5.0 and τ f = −51 ppm/°C were obtained for the (Mg 0.7Zn 0.3) 0.95Co 0.05TiO 3 ceramics containing 7 wt.% mol% BaCu(B 2O 5) sintered at 950 °C for 4 h.
Published Version
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