EQUATION OF STATE AND SHEAR-STRENGTH AT MULTIMEGABAR PRESSURES - MAGNESIUM-OXIDE TO 227GPA

被引：330

作者：

DUFFY, TS ^{[1
]}

HEMLEY, RJ ^{[1
]}

MAO, HK ^{[1
]}

机构：

[1] CARNEGIE INST WASHINGTON, CTR HIGH PRESSURE RES, WASHINGTON, DC 20015 USA

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 74卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.74.1371

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The equation of state, elasticity, and shear strength of magnesium oxide were examined to 227 GPa using synchrotron x-ray diffraction in a diamond anvil cell. Static compression, ultrasonic elasticity, and shock data for MgO from ambient pressure to above 200 GPa can all be described by a single Birch-Murnaghan equation of state when the static shear strength, which is determined to be at least 11 GPa at 227 GPa, is taken into account. Our results show that there are significant changes in the degree and character of the elastic anisotropy of MgO at high pressure. © 1995 The American Physical Society.

引用

页码：1371 / 1374

页数：4

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