Elastic constants of α-GeO2

被引：43
|
作者：
Grimsditch, M
Polian, A
Brazhkin, V
Balitskii, D
机构：
[1] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA
[2] Univ Paris 06, F-75252 Paris 05, France
[3] Russian Acad Sci, Inst High Pressure Phys, Troitsk 142092, Moscow Region, Russia
[4] Moscow MV Lomonosov State Univ, Moscow 117234, Russia
来源：
JOURNAL OF APPLIED PHYSICS | 1998年 / 83卷 / 06期
关键词：
D O I：
10.1063/1.367117
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The elastic constants of alpha-GeO2, the quartzlike polymorph of germanium dioxide, have been determined using Brillouin scattering. The data were obtained using a high quality single crystal of alpha-GeO2. When compared with existing data on alpha-SiO2, our results show that the shear constants are considerably softened in GeO2. This could be an indication that the observed pressure induced phase change is related to a shear instability. (C) 1998 American Institute of Physics.
引用
收藏
页码：3018 / 3020
页数：3
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