K. Ounadjela et al., INTERLAYER MAGNETIC COUPLING IN CO RU/COAG AND CO/CU/COAG TRILAYER FILMS - EFFECT OF AG IMPURITIES ON THE EXCHANGE COUPLING/, Journal of magnetism and magnetic materials, 156(1-3), 1996, pp. 267-268
We discuss here the consequences on the interlayer exchange coupling o
f the addition of small amounts of Ag within the cobalt layers of high
crystalline quality Co/Cu/CoAg and Co/Ru/CoAg trilayers. We show that
the Ag impurities induce a change in the average potential seen by th
e 's' and 'd' electrons in the cobalt. This is at the origin of phase
shifts in the oscillatory interlayer coupling behaviour.