Magnetoresistance, magnetization and FMR study of Fe/Ag/Co multilayer film

The polycrystalline [Fe/Ag/Co/Ag] x 3 asymmetric multilayer film was prepar ed by the UHV magnetron sputtering method on silicon. In-plane magnetizatio n measurements showed structured hysteresis loops. Magnetoresistance (MR) m easurements revealed giant magnetoresistance effect with magnitudes in 0.14 -0.21% range at room temperature. The saturation magnetizations and the int eraction between layers were studied by ferromagnetic resonance and reveale d an indistinguishably weak interlayer coupling from out-of-plane geometry of measurements. The MR data are interpreted based on incomplete domain ali gnment model for polycrystalline magnetic films. (C) 1999 Elsevier Science B.V. All rights reserved.