Abstract
Two Fe/Cu multilayer systems with ultra-thin Fe layers have been investigated by x-ray diffraction, Mossbauer spectroscopy and strain modulated ferromagnetic resonance. Mossbauer spectra show the existence of alpha -Fe and gamma -Fe and also a ferromagnetic phase, which has been attributed to the interdiffusion zone. The iron magnetic moment for the magnetic phases lies predominantly in the film plane. The magnetostriction constant increases with the iron thickness.