Improvement in the dielectric properties of Ba6−3x(Nd0.4Bi0.6)8+2xTi18O54(x = 1–1.5) ceramics by LiBSi/BaLiF glass additives

To develop low-temperature-fired Ba 6−3 x (Nd 0.4 Bi 0.6 ) 8+2 x Ti 18 O 54 ( x = 1–1.5, abbreviated as BNBT)-based ceramics, the effects of two kinds of glasses (LiBSi and BaLiF) addition on both the phase structure and dielectric properties of BNBT were investigated. The results indicate that LiBSi and BaLiF glasses can effectively wet the BNBT grain and be used as sintering aids to reduce the sintering temperature from 1,200 to 850 °C without the formation of additional phases. With the addition of 14.38 wt.% LiBSi and 1 wt.% BaLiF, the ceramics sintered at 850 °C show favorable dielectric properties of ε r = 55, tanδ = 0.00254.