The elastic constants of single crystal β-Si3N4

被引：85
|
作者：
Vogelgesang, R
Grimsditch, M
Wallace, JS
机构：
[1] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA
[2] Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA
来源：
APPLIED PHYSICS LETTERS | 2000年 / 76卷 / 08期
关键词：
D O I：
10.1063/1.125913
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Using Brillouin scattering, we have determined the complete set of elastic constants of the technologically important beta-Si3N4. Availability of single crystals has allowed us to measure all five independent c(ij), which (in units of GPa) are: c(11)=433(3), c(33)=574(3), c(13)=127(5), c(44)=108(2), c(66)=119(4), and c(12)=c(11)-2c(66)=195(8), giving a bulk modulus of 259. Our values are compared with existing calculations and c(ij) determined from nano-indentation results combined with empirical relations and trends in related materials. (C) 2000 American Institute of Physics. [S0003-6951(00)01608-9].
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页码：982 / 984
页数：3
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