PZT perovskite films on stainless steel were prepared by electrochemical reduction in solutions containing TiO 2+ , ZrO 2+ , and Pb 2+ ions. Heat treatment at temperatures higher than about 500°C was necessary for crystallization, because the as‐deposited oxide films were amorphous. The deposited oxides consisted of a mixture of hydroxides and oxide produced by an increase of pH due to some electrochemical reduction reactions of NO 3 − , H + , and H 2 O on the electrode surface. The composition of the PZT films was easily controlled by the composition in solution during the electrolysis. The mechanism of the PZT precursor deposition is discussed.
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Matsumoto et al. (1993) studied this question.
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