High-temperature studies of surface acoustic wave velocities in silicon by Brillouin scattering

被引:8
作者
Stoddart, PR
Comins, JD
Every, AG
机构
[1] Department of Physics, University of the Witwatersrand
关键词
D O I
10.1016/0921-4526(95)00864-0
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
The angular dependence of surface acoustic wave (SAW) velocities at high temperatures has been investigated by means of Brillouin scattering. The measurements were performed at temperatures up to 800 degrees C on the (001) surface of a silicon single crystal. The bulk elastic constants of silicon have been extracted from the data by performing a least-squares fit of calculated surface wave velocities to the measured angular dependence. There is good agreement between these results and existing ultrasonic measurements of the silicon elastic constants in this temperature range. This demonstrates the value of the technique for measurement of the high-temperature elastic properties of opaque materials.
引用
收藏
页码:717 / 719
页数:3
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