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Spin-valve Magnetoresistance of Uncoupled Fe-Cu-Co Sandwiches

A. Chaiken, P. Lubitz, J.J. Krebs, G.A. Prinz, and M.Z. Harford, Naval Research Laboratory, Washington, DC 20375

Published as Appl. Phys. Lett 59, 240 (1991).

Fe-Cu-Co sandwiches have been grown on glass and silicon substrates using electron-beam evaporation. Because the typical coercive field of a thin Co film is higher than that of a typical Fe film, the magnetization curves of these sandwiches show clearly the separate, sequential reversal of the Fe and Co moments as a function of applied field. In the applied field region where the moments of the two magnetic layers are antialigned, the spin-valve magnetoresistance shows a peak of over 3% in amplitude at room temperature. (Alison Chaiken)
Wed Oct 11 09:49:01 PDT 1995