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在超高真空(10 ̄(-7)pa)条件下用双源蒸镀法在单晶Si和NaCl衬底上制备了一系列Fe、Dy原子配比的成分调制多层膜。用卢瑟福背散时(RBS)和俄歇能谱(AES)分析成分沿厚度的分布,并用掠入射x射线衍射分析(XRD)离子束混合前后的结构。结果表明,随Ar离子剂量的增加混合量增加,在10 ̄(17)Ar/cm ̄2达到均匀混合,同时混合还诱发非晶化,平均成分约为Fe_(60)Dy_(40)的多晶膜完全转变为非晶态,Fe含量高于60at%,有残余bcc-Fe,反之,Dy含量高于40at%,有残余hcp-Dy.
A series of compositionally modulated multilayer films with Fe and Dy atomic ratios were prepared on single crystal Si and NaCl substrates by dual source evaporation under ultra-high vacuum (10 ~ (-7) Pa). The composition distribution along the thickness was analyzed using Rutherford backscattering (RBS) and Auger energy dispersive spectroscopy (AES), and the structures before and after ion beam mixing were analyzed by grazing incidence X-ray diffraction (XRD). The results showed that with the increase of Ar ion dosage, the mixing amount increased and reached the uniform mixing at 10 ~ (17) Ar / cm ~ 2, while the amorphization was also induced by the mixing. The average composition was about 60% Dy_ (40) The crystal film completely transformed into an amorphous state, Fe content higher than 60at%, there is residual bcc-Fe, conversely, Dy content higher than 40at%, residual hcp-Dy.