Sintering characteristic, structure, microwave dielectric properties, and compatibility with Ag of novel 3MgO-B₂O₃-<i>x</i>wt% BaCu(B₂O₅)-<i>y</i>wt% H₃BO₃ ceramics

In this study, 3MgO-B2O3-xwt%BaCu(B2O5) (BCB)-ywt%H3BO3 (2 ≤ x 8, 0 y 20) ceramics were sintered at the optimum temperature to form Mg3B2O6 and MgO phases. The effects of H3BO3 BCB on product characteristics, phase transition, microstructure, microwave dielectric properties 3MgO-B2O3 investigated. intensities diffraction peaks two phases varied with changing values. After sintering 950°C, = 6 15 achieved excellent a εr 6.72, Q × f 83,205 GHz τf – 65.05 ppm/°C. Besides, 8 5 925°C also good 6.64, 78,173 57.27 temperatures above both are well lower than melting point Ag, showing promising applications in low cofired ceramic devices. particular, these can be used as potential candidate materials for G technology, provided that further optimized.