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In this work, we present a study of the structural, magnetic and magnetotransport properties in magnetic multilayered structures (NiFeCo/Cu) at room temperature. The magnetic (m) and nonmagnetic (nm) layer thickness (t m , t nm ) and the composition of the magnetic layer effect on the magnetoresistance (MR) have been investigated experimentally and discussed theoretically in the framework of the Johnson-Camley semiclassical approach, based on the Boltzmann transport equation. The observed MR ratio oscillates for the Cu layer thickness with an average period of 12 A and decreases from one system to another less rich in Co. The MR peak position depends on the magnetic layer composition. The materials become harder with increasing Co concentration.

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