The processes of production of high purity nanopowders of niobium and tantalum pentoxide Ta2y Nb2(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 LiTa y Nb1–y O3 and Li x Na1–x Ta y Nb1–y O3 synthesized using coprecipitated pentoxide Ta2y Nb2(1–y)O5. Therewith for solid solutions LixNa1–x Ta y Nb1–y O3 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–x Ta y Nb1–y O3 from acoustoelectronic and piezoelectric type of materials into the capacitor and ion-conductive type of solid materials.
Russian Journal of Applied Chemistry – Springer Journals
Published: May 23, 2013
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