Voids, layers, and the first sharp diffraction peak in ZnCl2

被引：110

作者：

Wilson, M ^{[1
]}

Madden, PA ^{[1
]}

机构：

[1] Univ Oxford, Phys & Theoret Chem Lab, Oxford OX1 3QZ, England

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.80.532

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The origin of the first-sharp diffraction peak (FSDP) in supercooled liquid ZnCl2 (a network-forming, intermediate strength fluid) is studied by computer simulation. Measures are introduced to characterize voids in the spatial distribution of cations and the existence of transient layered structures and to clarify their role in producing the FSDP. It is shown that the position of the FSDP is set by the mean intervoid separation and that its intensity is due to density fluctuations with a layered character even well above the glass transition.

引用

页码：532 / 535

页数：4

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