Dielectric Properties of （AgxNa1-x）（NbyTa1-y）O3 System Prepared by Liquid Method

The dielectric properties of （AgxNa1-x）（NbyTa1-y）O3 were investigated, and its dielectric loss and capacitance were measured. The dielectric properties of nanometer （AgxNa1-x）（NbyTa1-y）O3 ceramic prepared by liquid method were better than that by conventional solid method. The average grain size of the nanometer powder（34 nm） obtained by citrate-gel method was small near 500 nm and homogeneous and the microstructure was dense and uniform. In addition, the sintering temperature had a great effect on properties. The dielectric properties of resultant samples were as follows： ε〉500, tgδ〈6 10^-4, αc〈 10 ppm/℃, ρv〉1 012Ω·cm.