Analysis of lattice strains measured under nonhydrostatic pressure

被引：319

作者：

Singh, AK ^{[1
]}

Balasingh, C

Mao, HK

Hemley, RJ

Shu, JF

机构：

[1] Natl Aeronaut Lab, Div Mat Sci, Bangalore 560017, Karnataka, India

[2] Carnegie Inst Sci, Geophys Lab, Washington, DC 20015 USA

[3] Carnegie Inst Sci, Ctr High Pressure Res, Washington, DC 20015 USA

来源：

JOURNAL OF APPLIED PHYSICS | 1998年 / 83卷 / 12期

关键词：

D O I：

10.1063/1.367872

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The equations for the lattice strains produced by nonhydrostatic compression are presented for all seven crystal systems in a form convenient for analyzing x-ray diffraction data obtained by newly developed methods. These equations have been used to analyze the data on cubic (bcc alpha-Fe) and hexagonal (hcp epsilon-Fe) systems. The analysis gives information on the strain produced by the hydrostatic stress component. A new method of estimating the uniaxial stress component from diffraction data is presented. Most importantly, the present analysis provides a general method of determining single crystal elastic constants to ultrahigh pressures. (C) 1998 American Institute of Physics.

引用

页码：7567 / 7575

页数：9

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