CHEMICAL ORDERING OF INTERSTITIAL VOIDS - THE ORIGIN OF THE 1ST SHARP DIFFRACTION PEAK FOR COVALENT GLASSES

被引：17

作者：

ELLIOTT, SR

机构：

[1] Department of Chemistry, University of Cambridge, Cambridge

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1992年 / 150卷 / 1-3期

关键词：

D O I：

10.1016/0022-3093(92)90105-S

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The first sharp diffraction peak (FSDP) in the structure factor of covalent glasses and liquids is ascribed to a chemical-order pre-peak in the partial structure factor, S(CC)(Q), associated with the ordering of interstitial voids around cation-centred clusters in the structure. The position of the FSDP of AX2-type glasses can be predicted quantitatively. The anomalous behaviour of the FSDP as a function of temperature, pressure and modifier-ion content can all be understood in this interpretation.

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页码：112 / 115

页数：4

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