| This dissertation presents an investigation of the electrochemical deposition of conducting metal oxide films and superlattices. The superlattices are textured, polycrystalline structures, where the substrate determines the orientation. These materials are deposited from a single plating bath at room temperature. Electrodeposition is a method by which systems containing compounds can be deposited by adjusting either the current or potential. The electrochemical method is unique since it provides feedback information during the deposition. The current following a potential step provides a measure of the deposition rate, while the integrated current-time transient determines the amount of material deposited. The shape of the transient indicates the dimensionality of growth.; In this work, it was found that the superlattices grew epitaxially onto (100) and (210) oriented substrates. The growth mode was two dimensional. Mass transport limited conditions during the deposition resulted in a graded composition through one of the layers. By decreasing the potential, a more square composition profile resulted. The step height of a monolayer was calculated from the transients which corresponded to deposition on the (400) planes for a (100) orientation. For a (210) orientation, deposition occurred on the (220) planes. In this system, the misfit was less than 0.3%.; A comparison to a system with large misfit was made. This involved deposition of {dollar}rm Tlsb2Osb3{dollar} onto glassy carbon, where the growth mode is described as SK-like growth. The atomic force microscope and Cottrell area measurements showed that large amounts of material deposited very early in the deposition process. An amorphous to crystalline transition was indicated by a large increase in the current during the potential step experiment. |
