Abstract
Niobium precursor was prepared by chelation using Nb 2O 5 as raw material. Adding lead acetate [Pb(Ac) 2] and nickel acetate [Ni(Ac) 2], the mixed sol was hydrothermally treated. The hydrothermal-derived compounds were calcined and the pure-perovskite Pb(Ni 1/3Nb 2/3)O 3 (PNN) can be successfully produced. By X-ray powder diffraction (XRD), the influence of calcination temperature, hydrothermal treatment time and process routes on the formation of perovskite PNN were investigated. The results show that the hydrothermal-derived powders transforms into perovskite PNN after calcining at 900 °C. Especially changing the preparation route of precursors, we produced pure-phase PNN powder.
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