Experimental Determination of Third-Order Elastic Constants of Diamond

被引：47
作者：
Lang, J. M., Jr. [1 ]
Gupta, Y. M.
机构：
[1] Washington State Univ, Inst Shock Phys, Pullman, WA 99164 USA
来源：
PHYSICAL REVIEW LETTERS | 2011年 / 106卷 / 12期
关键词：
MODULI; INTERIORS; PRESSURE; SILICON;
D O I：
10.1103/PhysRevLett.106.125502
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
To determine the nonlinear elastic response of diamond, single crystals were shock compressed along the [100], [110], and [111] orientations to 120 GPa peak elastic stresses. Particle velocity histories and elastic wave velocities were measured by using laser interferometry. The measured elastic wave profiles were used, in combination with published acoustic measurements, to determine the complete set of third-order elastic constants. These constants represent the first experimental determination, and several differ significantly from those calculated by using theoretical models.
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页数：4
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