Sintering, Microstructure and Microwave Dielectric Properties of BaCu2V2O8 Ceramic for LTCC Applications

A microwave dielectric BaCu 2 V 2 O 8 ceramic with a low intrinsic sintering temperature was synthesized by a solid-state sintering process. The influences of sintering process on the crystal phase composition, microstructure, relative density, and microwave dielectric properties of BaCu 2 V 2 O 8 ceramic were studied utilizing scanning electron microscopy and an x-ray diffractometer. The crystalline phase of BaCu 2 V 2 O 8 was the only one phase found in ceramic. The sample fired at 740°C for 6 h had the optimal microwave dielectric properties ( ε r = 13.5, Q  ×  f  = 46,300 GHz and τ f  = − 41.5 ppm/°C). The results mean that electronic devices fabricated by low temperature co-fired ceramic technology based on BaCu 2 V 2 O 8 ceramic have potential applications in the high-frequency field.