Abstract
The formation of PZT from the oxides Pb 3O 4, TiO 2 and ZrO 2 in the presence of NiO, Fe 2O 3 and Ta 2O 5 additives has been investigated by thermal analysis (DTA and TG), X-ray diffraction and chemical techniques. It is shown that the formation of PZT is accomplished through several steps: decomposition and formation of Pb 3O 4 between 240 and 390 °C; formation of PbTiO 3 above 350 °C and of its solid solutions at 650 °C. The PZT solid solution appears without formation of PbZrO 3.
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