CeO2 dunne films via een waterige sol-gel methode : textuur en structurele eigenschappen

During the last decade the focus in superconductivity research has partly shifted towards coated conductors, because of their high usability in electronic applications in comparison to bulky ceramic superconductors. The presented work reviews some recent progress made in the bufferlayer structure of such coated conductors. We focused on waterbased CeO2 thin films prepared by the sol‐gel method and deposited via dipcoating. Starting from watersoluble cerium(III)nitrate precursors, we were able to deposit thin films showing a variable degree of 002 orientation dependant on the film characteristics and synthesis conditions. The main influencing parameters on attaining the desired texture seems to be the flowing rate of the ambient Ar / 5%‐H2 atmosphere and the thickness of the synthesized bufferlayers. We could achieve a 50nm thick CeO2 film, exhibiting a high degree of 002 orientation and low surface roughness