OSCILLATION EFFECTS IN THE MAGNETIC AND OPTICAL-PROPERTIES OF CO-AL CU MULTILAYERS/

A series of [Co90Al10(1.6 nm)/Cu](30) multilayer samples were made to study the oscillatory interlayer coupling using a vibrating sample mag netometer (VSM), giant magnetoresistance (GMR), surface magneto-optica l Kerr effect (SMOKE), magneto-optical Kerr effect (MOKE) and spectros copic ellipsometry methods. The measured value of Delta R/R, in-plane saturation field (H-S), MOKE and effective dielectric constant epsilon were found to have an oscillation period of 0.9 nm as a function of t he Cu-layer thickness. The oscillations observed in those experiments arises from the same origin related to the interlayer coupling or quan tum-well effect. (C) 1998 Elsevier Science B.V. All rights reserved.