Ni-Fe-Co/Cu(/Co), Ni-Co/Cu(/Co) superlattices were prepared by rf sputtering. The MR ratio oscillates with the Cu layer thickness (tCu) with maximum values of 24 and 15% for tCu= 0.9 and 2 nm at room temperature in applied field of 0.5 kOe. tCumodulated films were prepared to investigate whether the GMR depends on the artificial periodicity of the films or not. © 1993.
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