Preparation and characteristics of Ba(Mg1/3Ta2/3)O3 from nanostructured powder

Nanostructured MgTa2O6 (BMT) powder was synthesized by co-precipitate wet chemical routes. The average particle size of the precipitate was ∼50 nm. The crystallization temperature of BMT nanostructured powder was ∼200 °C, lower than that of the ordinary mixed-oxide moth. Ceramics of BMT so produced showed fine grains of about 0.5–1.5 μm and high densities. Increased unloaded Q from 6000 to 8000 at 9.8 GHz and unchanged dielectric constant (about 23–25) were observed when the samples were annealed in Ar, the possible mechanism of enhanced characteristics is discussed.