NEW PREPARATION METHOD FOR PZT FILMS USING ELECTROCHEMICAL REDUCTION

PZT perovskite films on stainless steel were prepared by electrochemic al reduction in solutions containing TiO2+, ZrO2+, and Pb2+ ions. Heat treatment at temperatures higher than about 500-degrees-C was necessa ry for crystallization, because the as-deposited oxide films were amor phous. The deposited oxides consisted of a mixture of hydroxides and o xide produced by an increase of pH due to some electrochemical reducti on reactions of NO3-, H+, and H2O on the electrode surface. The compos ition of the PZT films was easily controlled by the composition in sol ution during the electrolysis. The mechanism of the PZT precursor depo sition is discussed.