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Abstract
The processes of production of high purity nanopowders of niobium and tantalum pentoxide Ta2yNb2(1–y)O5 with a low content of fluorine and Nb2O5 in low-temperature polymorph were studied. Ceramic samples were prepared from a charge of solid solutions LiTayNb1–yO3 and LixNa1–xTayNb1–yO3 synthesized using coprecipitated pentoxide Ta2yNb2(1–y)O5. Therewith for solid solutions LixNa1–xTayNb1–yO3 significantly larger values of high dielectric constant and ionic conductivity were achieved compared to the solid solutions obtained by using a mechanical mixture of Ta2O5 and Nb2O5. This converts solid solutions LixNa1–xTayNb1–yO3 from acoustoelectronic and piezoelectric type of materials into the capacitor and ion-conductive type of solid materials.
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