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Volume 115, Issue 5, 01 August 2001
115(2001); http://dx.doi.org/10.1063/1.1388542View Description Hide Description
Stern–Gerlach magnetic deflection measurements were performed on and in a molecular beam experiment. Adsorbed carbon monoxide was found to reduce the magnetic moments of most nickel clusters in this size range. For the reduction was ∼5 bohr magnetons, while smaller reductions were observed for the other clusters. The present results are in qualitative accord with previous experiments and calculations of the magnetization quenching effects of CO on both nickelnanoparticles and thin nickelfilms. The magnitude of the changes in cluster magnetic moments of and were larger than those predicted by the local quenching (bond number) model, indicating that the CO-induced perturbation to cluster electronic structure in these clusters is distributed among many nickel atoms.