Low-temperature sintering and microwave dielectric properties of Li_2MgTi_3O_8 ceramics doped with BaCu(B_2O_5)

The influences of BaCu（B2O5） （BCB） addition on sintering, microstructure and microwave dielectric properties of Li2MgTi308 ceramics were investigated using X-ray diffractometry, scanning electron microscopy and microwave dielectric measurements. The experimental results show that a small amount of BaCu（B2O5） addition can effectively reduce the sintering temperature to 900℃, and induce only a limited degradation of the microwave dielectric properties. Typically, the best microwave dielectric properties of er24.5, Q×f =24 622 GHz, rf=4.2×10-6℃ -1 are obtained for 1.0% BCB-doped Li2MgTi3O8 ceramics sintered at 900℃ for 3 h. The BCB-doped Li2MgTi3O8 ceramics can be compatible with Ag electrode, which may be a strong candidate for low temperature co-fired ceramics applications.

The influences of BaCu(B2O5)(BCB) addition on sintering,microstructure and microwave dielectric properties of Li2MgTi3O8 ceramics were investigated using X-ray diffractometry,scanning electron microscopy and microwave dielectric measurements,The experimental results show that a small amount of BaCu(B2O5) addition can effectively reduce the sintering temperature to 900 °C,and induce only a limited degradation of the microwave dielectric properties.Typically,the best microwave dielectric properties of εr=24.5,Q×f =24 622 GHz,τf=4.2×10?6 °C ?1 are obtained for 1.0% BCB-doped Li2MgTi3O8 ceramics sintered at 900 °C for 3 h.The BCB-doped Li2MgTi3O8 ceramics can be compatible with Ag electrode,which may be a strong candidate for low temperature co-fired ceramics applications.