MEAN-SQUARE RELATIVE DISPLACEMENTS OF NEAREST-NEIGHBOR ATOMS IN GE

被引：29

作者：

RABE, P

TOLKIEHN, G

WERNER, A

机构：

[1] Institut für Experimentalphysik, Universität Kiel

来源：

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS | 1979年 / 12卷 / 14期

关键词：

D O I：

10.1088/0022-3719/12/14/001

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

EXAFS spectra of crystalline and amorphous Ge have been used to determine the mean-square relative displacements sigma 2 of nearest- and next-nearest-neighbour atoms in the temperature range 80-400K. A strong correlation of the nearest-neighbour motion is observed for crystalline Ge, but this correlation decreases in the amorphous material. The results are compared with calculations performed within the Debye approximation. The structural parameters of amorphous Ge are consistent with a continuous random network approach.

引用

页码：L545 / L550

页数：6

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