Ni-Fe-Co/Cu(/Co), Ni-Co/Cu(/Co) superlattices were prepared by rf sputtering. The MR ratio oscillates with the Cu layer thickness (t(Cu)) with maximum values of 24 and 15% for t(Cu) = 0.9 and 2 nm at room temperature in applied field of 0.5 kOe. t(Cu) modulated films were prepared to investigate whether the GMR depends on the artificial periodicity of the films or not.