A new microwave dielectric material LiNi0.5Ti0.5O2

A new low-loss LiNi 0.5 Ti 0.5 O 2 ceramic was prepared by the conventional solid-state reaction route and its microwave dielectric properties were investigated. Single phase LiNi 0.5 Ti 0.5 O 2 was obtained and it showed rock salt structure. The microstructures of the ceramics were characterized by SEM. The variation trends of dielectric constant and Q × f value were in accordance with variation trends of relative density and the grain morphology. Further, the τ f value was insensitive to sintering temperature . The following typical values ε r ~19.25, Q × f ~51290   GHz, τ f ~−20.1   ppm/°C were obtained for LiNi 0.5 Ti 0.5 O 2 (1275   °C/6   h). The microwave dielectric properties of the ceramic are reported for the first time.