ABSTRACT
In this section the magnetic properties of films produced by depositing preformed gas-phase nanoparticles of Fe or Co directly
onto a substrate with no matrix material will be described. It is assumed throughout that the gas-phase clusters are produced and deposited in ultrahigh vacuum (UHV) conditions so that there is no oxide present during synthesis. If it is necessary to remove the film from vacuum, it must be protected by an impervious capping layer prior to exposure to air to maintain the pristine state of the film. As shown below, however, the nonmagnetic capping layer can alter magnetic behavior.
