ELECTRONIC-STRUCTURE AND MAGNETIC-PROPERTIES OF 2FE PD AND 2PD/FE MULTILAYERS/

In the present work the magnetic and electronic structure of 2Fe/Pd an d 2Pd/Fe multilayers are analyzed by means of the linear muffin-tin or bital method (LMTO). The calculations were carried out for several lat tice parameters in order to obtain the total energy as a function of t he volume. At the theoretical equilibrium volume, we found a high magn etic moment at Fe sites for 2Pd/Fe (mu(Fe) similar to 3.0 mu(B)) and 2 Fe/Pd (mu(Fe) similar to 2.7 mu(B)) multilayers. The analysis of the d ensity of states at equilibrium gives a good understanding of the beha vior of the 2Fe/Pd and 2Pd/Fe magnetization. The hyperfine field at ir on nuclei is near -39.0 T for 2Pd/Fe multilayer and has a lower value( -21.0 T) for 2Fe/Pd system. The results for the magnetic moments and h yperfine parameters at different lattice spacing show a strong depende nce of the magnetic properties of the 2Fe/Pd system with pressure. (C) 1998 Elsevier Science B.V. All rights reserved.