High quality factor microwave dielectric diopside glass-ceramics for the low temperature co-fired ceramic (LTCC) applications

Based on the obtained results, diopside precipitated as the only crystalline phase in all sintered glass-ceramics. Diopside glass-ceramics sintered through one-step (at 925 °C for 4 h) and two-step (at 800 °C for 4 h, then followed by heating at 950 °C for 2 h) procedures exhibited high-Q microwave dielectric of 56,952 GHz and 64,524 GHz, respectively. The degrees of crystallization and crystallite sizes of the glass-ceramics prepared from both sintering procedures were also characterized.