The influence of BaCu(B2O5) (BCB) addition on the sintering temperature and microwave dielectric properties of ZnO-2TiO2-Nb2O5 (ZTN) ceramic has been investigated using dilatometry, x-ray diffraction, scanning electron microscopy, and microwave dielectric measurements. A small amount of BCB addition to ZTN can lower the sintering temperature from 1100°C to 900°C. The reduced sintering temperature was attributed to the formation of the BCB liquid phase. The ZTN ceramics containing 3.0 wt.% BCB sintered at 900°C for 2 h have good microwave dielectric properties of Q × f = 19,002 GHz (at 6.48 GHz), ε r = 45.8 and τ f = 23.2 ppm/°C, which suggests that the ceramics can be applied in multilayer microwave devices, provided that Ag compatibility exists.
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This work was supported by the National 973 Project of China (2009CB623302), National 863 Project of China (2006AA03Z0429), and NSFC Projects (60871044, 50835007).
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Zhou, H., Wang, H., Li, K. et al. Microwave Dielectric Properties of ZnO-2TiO2-Nb2O5 Ceramics with BaCu (B2O5) Addition. J. Electron. Mater. 38, 711–716 (2009). https://doi.org/10.1007/s11664-009-0721-7
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DOI: https://doi.org/10.1007/s11664-009-0721-7