Abstract
Li2ZnTi3O8 ceramics doped with ZnOB2O3SiO2 glass were prepared by the conventional solid-state ceramic route. The effects of the ZnOB2O3SiO2 glass on the sintering temperature, phase composition, microstructure and microwave dielectric properties of Li2ZnTi3O8 ceramics were investigated. The addition of ZBS glass can reduce the sintering temperature of Li2ZnTi3O8 ceramic from 1075°C to 925°C without obvious degradation of the microwave dielectric properties. Only a single phase Li2ZnTi3O8 with cubic spinel structure forms in Li2ZnTi3O8 ceramic with ZBS addition sintered at 925°C. Typically, 0.75wt.% ZBS-doped Li2ZnTi3O8 ceramic sintered at 925°C can reach a maximum relative density of 95.9% and exhibits good microwave dielectric properties of εr=25.61, Q×f=51,615GHz and τf=−11.78ppm/°C, which is promising for LTCC applications.
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