Abstract
A nominal composition of Ba0.6Sr0.4TiO3 + 0.5 wt. % Li2O ceramic specimen was prepared from the citrate method. The addition of Li2O was found to be effective to reduce the sintering temperature of Ba0.6Sr0.4TiO3 ceramics, which was attributed to the formation of transient liquid phase. The ceramic specimen sintered at 900 °C showed a fine-grained microstructure with considerable densification and attained the relative density of 97%. The diffusion of Li2O into Ba0.6Sr0.4TiO3 lattice was found to have an evident effect on the dielectric properties of the ceramics. The specimen exhibited a dielectric constant of 1997 and a dielectric loss 0.67% at 10 kHz and zero bias-field together with a tenability of 27.8% and a FOM of 41 at 10 kHz and 30 kV/cm.
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More From: IOP Conference Series: Materials Science and Engineering
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