Glass-ceramic for low temperature co-fired dielectric ceramic materials based on La2O3–B2O3–TiO2 glass with BNT ceramics

Low-temperature co-fired ceramic (LTCC) materials with a sintering temperature of <900 °C were developed using rare earth derived borate glass (La2O3–B2O3–TiO2) and a conventional BNT (BaO–Nd2O3–TiO2) ceramic. The sintering behavior, phase evaluation, sintered morphology, and microwave dielectric properties were investigated. It was found that increasing the sintering temperature from 750 to 850 °C led to increases in shrinkage and microwave dielectric properties (≈20 for ɛr and >8000 GHz for Q*f0) but a decrease in porosity. The final crystal phases of the sintered samples were identified as HT-LaBO3 and TiO2.