Abstract
Thermal decompositions of the precursors for chemical solution deposition of 0·7 Pb(Mg1/3Nb2/3)O3-0·3 PbTiO3 (0·7PMN-0·3PT) thin films were studied. The precursors were prepared from lead acetate or acetylacetone modified lead acetate by diol based route and dried at 100°C. Thermal decompositions of the PT, PMN and PMN-PT precursors in air occur stepwise. Between room temperature and ∼200°C, the weight loss of a few per cent is due to the evaporation of residual solvents. Organic groups decompose in the ranges 200-400°C and 400-650°C. The thermal decompositions are affected by the choice of the Pb compound and chemical composition of the sample.
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