MAGNETIC AND ELECTRONIC-STRUCTURE OF NI AG BILAYERS/

Self-consistent band-structure calculations were performed for Ni/Ag b ilayers to study important features of these materials. Using the Line ar Muffin-Tin Orbital (LMTO) method, we carried out calculations for s everal lattice parameters in order to obtain ground-state properties s uch as equilibrium volume, bulk modulus and critical pressure of the N i/Ag bilayers. The analysis of the density of states at equilibrium vo lume gives a good description of the electronic and magnetic propertie s of these bilayers. The results show a breakdown of the small magneti c moment at Ni sites for certain critical lattice parameters.