THE BOSON PEAK IN GLASS FORMERS OF INCREASING FRAGILITY

被引：85

作者：

HASSAN, AK ^{[1
]}

BORJESSON, L ^{[1
]}

TORELL, LM ^{[1
]}

机构：

[1] CHALMERS UNIV TECHNOL,DEPT PHYS,S-41296 GOTHENBURG,SWEDEN

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1994年 / 172卷

关键词：

D O I：

10.1016/0022-3093(94)90427-8

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 'universal' low frequency vibrational behaviour of glasses has been investigated for systems of increased fragility. A dynamical correlation length, l(c), was determined from the position of the boson peak in low frequency Raman spectra. It is found that the value of l(c) correlates with the fragility, hence with the relaxation dynamics which characterise the system in the liquid-glass transition range. Results for oxide, ionic and molecular glasses show that l(c) decreases as the fragility of the system increases.

引用

页码：154 / 160

页数：7

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