Abstract: In this study，a series of Cu/Co nanomultilayers with the wavelength from 200nm to 5nm were prepared by using single-bath methods and the multilayered structure was studied by using SEM and XRD. The relationship between giant magnetoresistance (GMR) and wavelength(λ) and Cu layer thickness（δC_u） of the multilayer was investigated by using four point probe technique.When λ was rather big，no GMR effect was found.When λ was smaller than 30nm，GMR increased with the decrease of λ，but when λ was smaller than 8nm，GMR vibrated periodically with the change of Cu layer thickness.

Key words:

Cu/Co纳米多层膜, 巨磁电阻, 电沉积

摘要： 采用双脉冲控电位技术在单晶硅上沉积了一系列Cu/Co纳米多层膜，调制波长从200nm到5nm不等.用扫描电镜及X射线衍射对多层膜的调制结构进行了表征.采用四探针法测试多层膜的巨磁电阻（GMR）效应，研究了GMR与调制波长（λ）、铜的子层厚度（δ_Cu）的关系：λ较大时，没有观察到明显的GMR效应；λ＜30nm时，GMR效应随λ减小而增大；而λ＜8nm时，GMR值随铜层厚度的变化周期性振荡.

关键词:

Cu/Co纳米多层膜, 巨磁电阻, 电沉积