Chiang Mai Journal of Science

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A partial oxalate route has been developed for the synthesis of lead iron niobate, Pb(Fe_1/2Nb_1/2)O₃  (PFN) powder. An oxalated iron niobate (FeNbO₄) was employed as a key precursor with the formation of PFN phase investigated as a function of calcination temperature and dwell time by  TG-DTA and XRD. The morphology of the calcined powder was determined via SEM. It has been found that the unreacted FeNbO₄  and PbO phases tend to form together with PFN depending on calcination conditions. However, single phase PFN powder was successfully obtained for a calcination temperature of 900°C for 4 h.

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