Formation and properties of lead titanate thick films prepared by nanopowder-metal-organic decomposition process

Crystallization behavior and ferroelectric properties of the PbTiO3, PT, th in films prepared by spin-coating of nano-powder incorporated carboxylates were systematically examined. Comparing to the direct synthesis of PT films by metal-organic decomposition process, the incorporation of nano-sized PT powders into the carboxylates markedly modifies the crystallization kineti cs of the PT films. Purr perovskite phase can be obtained by post-annealing these films at 600 degreesC for 1 h and the remanent polarization for the films can be optimized only by post-annealing at high enough temperature (6 50 degreesC). However, the nano-powder incorporated Pf Rims possess pronoun cedly lower remanent polarization (P-r) and smaller coercive field (E-c) th an the non-powdered PT films. Such a phenomenon is ascribed to the formatio n of multi-grain structure in each column of the films.