Structural relationship among amorphous, quasicrystal, and crystal in metallic glasses

用透射电子显微镜研究了金属玻璃中非晶、准晶和晶体之间的结构关系。埃束电子衍射技术首先利用扫描透射电子显微镜从玻璃状态中获取局部结构信息。我们利用这种技术对准晶形成的Zr-Pt玻璃的局部原子结构进行了检测，发现在玻璃态下观察到的二十面体与准晶中的二十面体相比是扭曲的。

A structural relationship among amorphous, quasicrystal, and crystal in metallic glasses was investigated by means of transmission electron microscopy. Angstrom-beam electron diffraction technique was first developed using a scanning transmission electron microscope to take local structural information from glass states. We examined local atomic structures of a quasicrystal-forming Zr-Pt glass using this technique and then found that the observed icosahedra in the glass state are distorted compared with those in the quasicrystal.