MEDIUM-RANGE ORDER IN GLASSES - COMPARISON OF RAMAN AND DIFFRACTION MEASUREMENTS

被引：371
|
作者：
SOKOLOV, AP [1 ]
KISLIUK, A [1 ]
SOLTWISCH, M [1 ]
QUITMANN, D [1 ]
机构：
[1] RUSSIAN ACAD SCI,INST AUTOMAT & ELECTROMETRY,NOVOSIBIRSK 630090,USSR
来源：
PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 10期
关键词：
D O I：
10.1103/PhysRevLett.69.1540
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The correlation lengths of vitreous structures estimated from the low-frequency (boson) peak in Raman spectra and from the width of the first sharp diffraction peak are compared. This first comparison shows that the two estimates, which are based on dynamic and static properties, respectively, are in good quantitative agreement. The present result supports the concepts that (a) a decisive scale for structural order in glasses is approximately 10 angstrom, and (b) the low-frequency excitations are defined by the characteristic length in vitreous structures.
引用
收藏
页码：1540 / 1543
页数：4
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