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An investigation of transition metal clusters deposited on graphite and metal oxide substrates by a combined use of XPS, UPS and Auger spectroscopy

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dc.contributor.author Vijayakrishnan, V
dc.contributor.author Rao, C N R
dc.date.accessioned 2012-12-03T09:39:22Z
dc.date.available 2012-12-03T09:39:22Z
dc.date.issued 1991-09
dc.identifier 0039-6028 en_US
dc.identifier.citation Surface Science 255(1-2), L516-L522 (1991) en_US
dc.identifier.uri https://libjncir.jncasr.ac.in/xmlui/10572/1177
dc.description Letter. Restricted Access. en_US
dc.description.abstract Cu and Ni clusters deposited on graphite and metal oxide (TiO2, Al2O3) supports have been investigated by X-ray and UV photoelectron spectroscopy as well as Auger electron spectroscopy. The 2p core-level binding energy of the cluster increases with the decrease in the cluster size and the maximum shift in the case of the smallest cluster is 0.8-1.4 eV (relative to the bulk), the actual value depending on the substrate. The metal LMM Auger line shifts to lower kinetic energies with the decrease in the cluster size and this shift is considerably larger (1.4-3.3 eV) than that of the 2p binding energy. The shifts in the position and intensities of the valence bands with the cluster size have also been studied; the 3d band intensity approaches zero for the smallest cluster size studied by us, the number of atoms in the smallest cluster being in the range 25-75. One of the conclusions from the study is that the magnitude of the shifts in the core-level binding energy and the Auger kinetic energy due to the decrease in the cluster size depends on the substrate, being largest on an insulating substrate such as Al2O3 and least on graphite. en_US
dc.description.uri http://dx.doi.org/10.1016/0039-6028(91)90005-D en_US
dc.language.iso en en_US
dc.publisher Elsevier Science BV en_US
dc.rights © 1991 Elsevier Science BV en_US
dc.subject Electronic Structure en_US
dc.subject Auger spectroscopy en_US
dc.subject transition metal clusters en_US
dc.subject metal oxide substrates en_US
dc.title An investigation of transition metal clusters deposited on graphite and metal oxide substrates by a combined use of XPS, UPS and Auger spectroscopy en_US
dc.type Article en_US


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