X-ray diffraction study of arsenopyrite at high pressure

被引：7
|
作者：
Fan, D. W. [1 ]
Ma, M. N. [2 ]
Zhou, W. G. [1 ]
Wei, S. Y. [1 ,2 ]
Chen, Z. Q. [3 ]
Xie, H. S. [1 ]
机构：
[1] Chinese Acad Sci, Inst Geochem Earths Deep Interior Mat & Fluid Int, Guiyang 550002, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
[3] SUNY Stony Brook, Dept GeoSci, Stony Brook, NY 11794 USA
来源：
PHYSICS AND CHEMISTRY OF MINERALS | 2011年 / 38卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Arsenopyrite; X-ray diffraction; Equation of state; PYRITE; FES2; FEASS; STATE; CELL;
D O I：
10.1007/s00269-010-0386-z
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The high-pressure X-ray diffraction study of a natural arsenopyrite was investigated up to 28.2 GPa using in situ angle-dispersive X-ray diffraction and a diamond anvil cell at National Synchrotron Light Source, Brookhaven National Laboratory. The 16:3:1 methanol-ethanol-water mixture was used as a pressure-transmitting medium. Pressures were measured using the ruby-fluorescence method. No phase change has been observed up to 28.2 GPa. The isothermal equation of state (EOS) was determined. The values of K (0), and K' (0) refined with a third-order Birch-Murnaghan EOS are K (0) = 123(9) GPa, and K' (0) = 5.2(8). Furthermore, we confirm that the linear compressibilities (beta) along a, b and c directions of arsenopyrite is elastically isotropic (beta (a) = 6.82 x 10(-4), beta (b) = 6.17 x 10(-4) and beta (c) = 6.57 x 10(-4) GPa(-1)).
引用
收藏
页码：95 / 99
页数：5
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