EXAFS study of structural characteristics of nanocrystalline selenium with different grain sizes
EXAFS study of structural characteristics of nanocrystalline selenium with different grain sizes
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不同晶粒尺寸纳米晶硒结构特征的EXAFS研究
DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
T. Liu
中科院分区：
文献类型：
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作者：
Yonghao Zhao;K. Lu;T. Liu
扩展X射线吸收精细结构测量（EXAFS）进行纳米晶（NC）元素硒样品的晶粒尺寸范围从13到60 nm。结合前面的研究，我们得出结论：随着nc Se的细化，链内结构（键长、配位数）不变，而链间间距增大。在nc Se的晶界被发现是在一个低能量的配置，这是从无序的“类气体”晶界结构不同。[S0163-1829（99）01014-0]。
Extended x-ray-absorption fine-structure measurements (EXAFS) were performed on nanocrystalline (nc) elemental Se samples with grain sizes ranging from 13 to 60 nm. Accompanied with the previous study, we concluded that, with the refinement in nc Se, the intrachain structure (the bond length, the coordination number) is unchanged while the interchain spacing is enlarged. The grain boundary in the nc Se is found to be in a low-energy configuration that is different from the disordered ''gaslike" grain boundary structure. [S0163-1829(99)01014-0].