X-ray diffraction study of molybdenum disulfide to 38.8 GPa

被引：78

作者：

Aksoy, Resul ^{[1
]}

Ma, Yanzhang ^{[1
]}

Selvi, Emre ^{[1
]}

Chyu, Ming C. ^{[1
]}

Ertas, Atila ^{[1
]}

White, Allen ^{[1
]}

机构：

[1] Texas Tech Univ, Dept Mech Engn, Lubbock, TX 79409 USA

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2006年 / 67卷 / 9-10期

关键词：

high pressure; equations-of-state; X-ray diffraction;

D O I：

10.1016/j.jpcs.2006.05.058

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The high-pressure behavior of molybdenum disulfide (MoS2) has been investigated using an energy dispersive synchrotron X-ray diffraction method in a diamond anvil cell to 38.8 GPa at room temperature. It is found that the c-axis I compression ratio is about three times larger than a-axis at pressures below 10 GPa. It gradually decreases with increasing pressure, and reduces to two times above 28.9 GPa. The reduction of c-axis with pressure displayed a discontinuity between 20.5 and 28.9 GPa. This may result from a phase transformation. The experimental pressure-volume data below 20.5 GPa were fitted with the third-order Birch-Murnaghan equation of state, and the bulk modulus was obtained as K-0T = 53.4 +/- 1 GPa and its pressure derivative as K-0T = 9.2 + 0.4. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：1914 / 1917

页数：4