Low temperature cofiring and compatibility with silver electrode of ZnO–SnO2–TiO2–Nb2O5 ceramics with BaCu(B2O5) addition

The effect of BaCu(B2O5) (BCB) addition on the sintering temperature and microwave dielectric properties of 2.5ZnO–0.2SnO2–4.8TiO2–2.5Nb2O5 (ZSTN) has been investigated by the solid-state ceramic route. X-ray diffraction and scanning electron microscopy techniques were used to analysis the structure and microstructure. The microwave dielectric properties were measured by the resonance method. It was found that the addition of BCB can effectively lower the sintering temperature from 1100 °C to 900 °C, and improves the microwave dielectric properties of ZSTN ceramics. The BCB doped ZSTN ceramics can be compatible with Ag electrode, which makes it a promising ceramic for LTCC technology application.