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提出了描述纳米多层材料电导率同层间距及层厚比关系的数学模型 .利用电子束物理气相沉积方法 (EB PVD)制备了Fe/Cu纳米多层材料并测量了电导率同层间距及层厚比之间的关系 .测量结果表明 ,当层间距小于 30nm时 ,电导率随层间距的减小而急剧降低 .层间距固定时 ,电导率随层厚比的增加而线性减小 .通过对固定层厚比、不同层间距的Fe/Cu纳米多层材料的实测电导率进行拟合计算 ,获得了模型内的各参数值 .利用获得的参数值计算了固定层间距时 ,Fe/Cu纳米多层材料的电导率同层厚比的关系 ,并同实测结果进行了对比 .对比结果表明 ,计算结果同实测结果表现出较好的一致性 .
A mathematic model describing the relationship between the conductivity, the same layer spacing and the layer thickness ratio was proposed.Electron Beam Physical Vapor Deposition (EB PVD) was used to fabricate Fe / Cu multilayered materials and measure the conductivity of the same layer spacing and The relationship between the layer thickness ratio.The results show that when the layer spacing is less than 30nm, the conductivity decreases sharply with the decrease of the layer spacing.When the layer spacing is fixed, the conductivity decreases linearly with the increase of layer thickness ratio The measured conductivities of Fe / Cu nanocomposite with fixed layer thickness ratio and different layer spacings were fitted and calculated, and the parameters in the model were obtained.With the parameters obtained, the Fe / Cu The results show that the calculated results are in good agreement with the measured data.