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用离子束溅射法制备了６个系列的ＣｏｘＡｇ１００－ｘ／Ａｇ颗粒多层膜，对其巨磁电阻随成分及Ａｇ层和Ｃｏ—Ａｇ层厚度的变化规律进行了研究．当Ａｇ层厚度改变时，ＧＭＲ有一峰值，且随着Ｃｏ含量增加，峰值向层厚增加的方向位移，当Ｃｏ—Ａｇ层厚度改变时，Ｃｏ含量较高的样品的磁电阻在ｄｍ＝２．０ｎｍ附近有一个极大值，而Ｃｏ含量较低的样品在ｄｍ６．０ｎｍ范围是单调上升的．用磁层间静磁相互作用的反铁磁耦合模型对上述现象加以解释．还研究了Ｃｏ４５Ａｇ５５／Ａｇ多层膜样品的退火效应．
Six series of CoxAg100-x / Ag multi-layer films were prepared by ion beam sputtering. The variation of giant magnetoresistance with composition and thickness of Ag and Co-Ag layers were studied. When the thickness of Ag layer changes, GMR has a peak, and as Co content increases, the peak value shifts to the direction of increasing layer thickness. When the thickness of Co-Ag layer changes, the magnetic resistance of the sample with higher Co content is dm = 2. There is a maximum near 0 nm, while the samples with lower Co content monotonically increase in the dm ~ 6.0 nm range. This phenomenon is explained by the anti-ferromagnetic coupling model of the magnetostatic interaction between the magnetospheres. The annealing effect of the Co45Ag55 / Ag multilayer film samples was also investigated.