MAGNETOSTRICTION CONSTANT OF MULTILAYER Ni-Ag FILMS DETERMINED BY FERROMAGNETIC RESONANCE

The results of magnetostriction constant λs, of multilayer Ni-Ag films are reported. The measurements have been performed at room temperature using strain modulated ferromagnetic resonance method. The magnetostriction constant λs depends linearly on the inverse Ni layer thickness. This effect is suggested to be due to the reduced local symmetry in interfaces