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首页> 外文期刊>Philosophical Magazine Letters >Formation of a decagonal quasicrystalline film by reactive diffusion in Al/Co multilayers
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Formation of a decagonal quasicrystalline film by reactive diffusion in Al/Co multilayers

机译：通过反应扩散在Al / Co多层膜中形成十边形准晶体膜

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The formation of a decagonal Al-Co quasicrystalline film by reactive diffusion in a multilayer material and its thermal stability are studied. From experimental results obtained by differential scanning calorimetry, in situ ramped resistance measurements, X-ray diffraction and transmission electron microscopy, it is shown that Al/Co multilayers corresponding to an Al/Co ratio of 13/4 transform through heat treatment into a single-phase decagonal structure. Two reaction steps, which correspond to the transformation of the film into a monoclinic structure of the Al_9Co_2 type, precede the formation of the quasicrystalline state observed at about 500 ℃. Once formed, the quasicrystalline film is stable upon annealing from room temperature up to 710 ℃. Above this temperature, it transforms into periodic structures of the monoclinic Al_(13)Co_4 and orthorhombic Al_3Co (or Al_(11)Co_4) types.
机译：研究了在多层材料中通过反应扩散形成的十角形Al-Co准晶膜及其热稳定性。从差示扫描量热法，原位倾斜电阻测量，X射线衍射和透射电子显微镜获得的实验结果表明，对应于13/4的Al / Co比的Al / Co多层通过热处理转变成单一的相十边形结构。在大约500℃观察到准晶态形成之前，有两个反应步骤，分别对应于薄膜转变为Al_9Co_2型单斜晶结构。一旦形成，准晶膜在从室温到710℃的退火温度下都是稳定的。在此温度以上，它将转变为单斜Al_（13）Co_4和斜方Al_3Co（或Al_（11）Co_4）类型的周期性结构。

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