Boson peak, structural inhomogeneity, light scattering and transparency of silicate glasses

被引：38

作者：

Champagnon, B. ^{[1
]}

Wondraczek, L. ^{[2
]}

Deschamps, T. ^{[1
]}

机构：

[1] Univ Lyon 1, Lab Physicochim Mat Luminescents, CNRS, UMR5620, F-69662 Villeurbanne, France

[2] Univ Erlangen Nurnberg, Dept Mat Sci WW3, D-91058 Erlangen, Germany

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2009年 / 355卷 / 10-12期

关键词：

Acoustic properties and phonons; Raman scattering; Optical fibers; Pressure effects; Absorption; Raman spectroscopy; Terahertz properties and measurements; Silicates; Fluctuations; Enthalpy relaxation; MEDIUM-RANGE ORDER; PERMANENTLY DENSIFIED SIO2; FREQUENCY RAMAN-SCATTERING; FICTIVE TEMPERATURE; PRESSURE; RELAXATION; DEPENDENCE; TRANSITION; DYNAMICS;

D O I：

10.1016/j.jnoncrysol.2009.01.029

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 microscopic origin of the excess of Density of Vibrational States (Boson peak) is discussed, taking into account recent analyses of the properties of glasses that were frozen-in under high pressure. Experimental data reveals a decrease of the Boson peak with increasing pressure of freezing (fictive pressure) and, simultaneously, an increase of the structural homogeneity of the glass. These results Suggest new ways to improve the transmission of telecommunication fibers by decreasing the optical loss due to the scattering by the structural inhomogeneities of glasses. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：712 / 714

页数：3

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