next up previous
Next: Introduction Up: A. Chaiken Papers

Composition Dependence of Giant Magnetoresistance in Fe/Ag/CoxFe1-x Sandwiches

A. Chaiken, C.J. Gutierrez, J.J. Krebs, and G.A. Prinz, Code 6345, Naval Research Laboratory, Washington, DC 20375

Published as J. Magn. Magn. Matls. 125, 228 (1993).

The magnitude of the giant or spin-valve magnetoresistance in ferromagnet/paramagnet/ferromagnet sandwiches depends on the choice of ferromagnet. In this study, the dependence of the giant magnetoresistance on the composition of the alloy layer in a series of Fe/Ag/CoxFe1-x sandwiches has been varied in order to get some insight into the fundamental origin of the effect. The CoxFe1-x alloy layers can be grown in the bcc phase throughout the range 0 < x < 1 using molecular beam epitaxy. The anisotropic magnetoresistance of these sandwiches shows a simple linear dependence on x, the Co fraction, but the giant magnetoresistance has a non-monotonic composition dependence. (Alison Chaiken)
Wed Oct 11 09:49:01 PDT 1995