Effect of crystallization on microwave dielectric properties of stoichiometric cordierite glasses containing B2O3 and P2O5

[[abstract]]The effect of crystallization on microwave dielectric properties of cordierite glasses containing B2O3 and P2O5 additions was investigated. Two glasses containing 5 wt% B2O3/5 wt% P2O5 and 7.5 wt% B2O3/7.5 wt% P2O5 were studied. Both glasses were sintered to nearly full density at temperatures as low as 860°C. The frequency constant and quality factor of α cordierite are, respectively, about five times and two times larger than those of glassy phase and μ cordierite. The temperature coefficients of resonant frequency are estimated to be about -13, -55, and -15 ppm/°C for glassy phase, CL cordierite, and α cordierite, respectively. As a result of the microwave dielectric properties of the individual phase, cordierite glasses containing or cordierite possess the best microwave properties[[fileno]]2020301010043[[department]]材料科學工程學