Dresden 2014 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 59: Metal Substrates I
O 59.1: Vortrag
Mittwoch, 2. April 2014, 16:00–16:15, WIL A317
Growth morphology of thin films on the metallic and oxide surfaces — •Aleksander Krupski — Department of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom.
In this work we briefly review recent investigations concerning growth morphology of thin metallic films on the Mo(110) and the Ni3Al(111) surfaces, and Fe and Copper Phthalocyanine (C32H16N8Cu) on the Al2O3/Ni3Al(111) surface. Comparison of Ag, Au, Sn, and Pb growth on the Mo(110) surface has shown a number of similarities between these adsorption systems except surface alloy formation that has only observed in the case of Sn and Au. In the Pb/Mo(110) and Pb/Ni3Al(111) adsorption systems selective formation of uniform Pb island heights during metal thin film growth has been observed and interpreted in terms of quantum size effects. Furthermore, our studies showed that Al2O3 on Ni3Al(111) exhibits a large superstructure in which the unit cell has a commensurate relation to the substrate lattice. In addition, Copper Phthalocyanine chemisorbed weakly onto an ultrathin Al2O3 film on Ni3Al(111) and showed a poor template effect of the Al2O3/Ni3Al(111) system. In the case of iron cluster growth on Al2O3/Ni3Al(111) the nucleation sites were independent of deposition temperature, yet cluster shape showed a dependence. In this system, Fe clusters formed a regular hexagonal lattice on the Al2O3/Ni3Al(111).