High pressure elastic and plastic deformations of silica: In situ diamond anvil cell Raman experiments

被引：65

作者：

Champagnon, B. ^{[1
]}

Martinet, C. ^{[1
]}

Boudeulle, M. ^{[1
]}

Vouagner, D. ^{[1
]}

Coussa, C. ^{[1
]}

Deschamps, T. ^{[1
]}

Grosvalet, L. ^{[1
]}

机构：

[1] Univ Lyon 1, CNRS, UMR 5620, Lab Phys Chim Mat Luminescents Domain Sci Doua, F-69622 Villeurbanne, France

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2008年 / 354卷 / 2-9期

关键词：

Raman scattering; indentation; microindentation; molecular dynamics; Raman spectroscopy; silica; pressure effects; defects; medium-range order;

D O I：

10.1016/j.jnoncrysol.2007.07.079

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：

Normal silica glass is usually referred to as low density amorphous silica as it can be converted to high density amorphous silica by a hydrostatic pressure (polyamorphic transition). In this work in situ Raman experiments are performed in a diamond anvil cell up to 18 GPa. The pressure effects on the structure of silica after successive compression decompression experiments are analyzed. The mode Gruneisen parameters corresponding to the elastic compression of high density amorphous silica are obtained and compared with those of normal silica. A reorganization of the high density amorphous silica below 3 GPa is evidenced. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：569 / 573

页数：5

共 25 条

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