Glass-ceramic for low temperature co-fired dielectric ceramic materials based on La 2O 3–B 2O 3–TiO 2 glass with BNT ceramics

Abstract

Low-temperature co-fired ceramic (LTCC) materials with a sintering temperature of <900 °C were developed using rare earth derived borate glass (La 2O 3–B 2O 3–TiO 2) and a conventional BNT (BaO–Nd 2O 3–TiO 2) 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 ɛ r and >8000 GHz for Q * f 0) but a decrease in porosity. The final crystal phases of the sintered samples were identified as HT-LaBO 3 and TiO 2.