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用四探针法、纵向表面磁光效应、极克尔磁光谱仪和椭圆偏振光谱仪研究了离子束溅射法制备的［Co90Al10(1.6nm)/Cu］30多层膜中的层间耦合、磁光效应及光学性质．结果发现对于Co－Al／Cu多层膜，其面内饱和场Hs、矫顽力Hc、磁电阻△R／R、特别是等效介电函数ε，磁光极克尔角θk。分别随Cu层厚度的变化同步作周期性的振荡，其周期为0．9nm．由此可见磁光效应及光学常数的振荡是由层间耦合振荡的结果，计算发现光学常数的振荡是磁光效应振荡的一个重要原因．
The interlayer coupling in [Co90Al10 (1.6nm) / Cu] 30 multilayers prepared by ion beam sputtering was studied by four-probe method, longitudinal magneto-optical effect, polar Kerr and ellipsometer. Light effects and optical properties. As a result, it was found that the in-plane saturation field Hs, the coercive force Hc, the magnetoresistance ΔR / R, in particular, the equivalent dielectric function ε and the magneto-optic Kerr angle θk for the Co-Al / Cu multilayer film. Respectively, with the changes in the thickness of the Cu layer for periodic oscillations simultaneously, the period of 0.9nm. It can be seen that the magneto-optical effect and the oscillation of the optical constant are the result of the coupled-layer oscillation. Calculations show that the oscillation of the optical constant is an important reason for the magneto-optical effect oscillation.