Structure study of the chalcogens and chalcogenides by X-ray absorption fine structure

被引:0
作者
Ikemoto H. [1 ]
Miyanaga T. [2 ]
机构
[1] Department of Physics, University of Toyama, Toyama
[2] Department of Mathematics and Physics, Hirosaki University, Hirosaki, Aomori
来源
Zeitschrift fur Physikalische Chemie | 2021年 / 235卷 / 1-2期
关键词
Chalcogen; Chalcogenide; Hierarchic structure; XAFS;
D O I
10.1515/zpch-2020-1627
中图分类号
学科分类号
摘要
In this review, wemake a survey of the structure studies for the chalcogen elements and several chalcogenides in liquid, amorphous and nanosized state by using X-ray absorption fine structure (XAFS). The chalcogen elements have hierarchic structures; the chain structure constructed with the strong covalent bond as a primary structure, and the weaker interaction between chains as a secondary one. Existence of these two kinds of interactions induces exotic behaviors in the liquid, amorphous and nanosized state of the chalcogen and chalcogenides. XAFS is a powerful structure analysis technique for multi-element systems and the disordered materials, so it is suitable for the study of such as liquid, amorphous and nanosized mixtures. In section 2, the structures for the liquid state are discussed,which show the interesting semiconductor-metal transition depending on their temperatures and components. In section 3, the structure for the amorphous states are discussed. Especially, some of chalcogens and chalcogenides present the photostructural change, which is important industrial application. In section 4, the structures of nanosized state, nanoparticles and isolated chain confined into the narrow channel, are discussed. The studies of the nanoparticle and the isolated chain reveal the alternative role between the intrachain covalent bonds and the interchain interaction. © 2021 De Gruyter. All rights reserved.
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页码:117 / 140
页数:23
相关论文
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