INTERLAYER EXCHANGE COUPLING - EFFECT OF ALLOYING

The effect of alloying and partial order in magnetic layers on periods , amplitudes, and phases of oscillations of interlayer exchange coupli ng (IEC) in magnetic multilayers is studied theoretically on ab initio level. We employ the spin-polarized surface Green function technique within the tight-binding linear muffin-tin orbital method and the Lloy d formulation of the IEC. The coherent potential approximation is used to describe the effect of alloying and of partial order. Numerical re sults illustrating the theory are presented.