2 OSCILLATORY BEHAVIORS AS FUNCTIONS OF FERROMAGNETIC LAYER THICKNESSIN FE CR(100) MULTILAYERS/

Oscillatory magnetoresistance as a function of the Fe layer thickness has been found in Fe/Cr(100) multilayers deposited on MgO(100). It is mainly attributed to an oscillatory interlayer exchange coupling betwe en adjacent Fe layers as a function of the Fe layer thickness. Further , oscillatory variation of the saturation resistivity with Fe layer th ickness was also observed. Both the oscillation periods are approximat ely 8 angstrom. These two oscillations can be understood in terms of t he partial confinement of the perpendicular motion to the layer plane of Fe majority spin electrons.