|
One of the important tasks in connection with deposited metal atoms and clusters is to control the defect structure and density of oxide supports, because the abundance and nature of defects determines to a large extent the growth and electronic structure of metal atoms and metal clusters on such surfaces. To this end we have undertaken experiments on Au and Pd atoms and clusters with variable sizes on a number of different supports, including magnesia, alumina and magnetite. The experiments include STM, STS, IRAS, TDS molecular beam and ESR investigations on the pure supported metal atom/cluster system as well as on adsorbates on the metals deposits. The ESR experiments turn out to be particularly useful in the case of Au atom deposition. |