In-situ synchrotron X-ray diffraction study of scorodite at high pressure

被引：0
作者：
Fan, Dawei [1 ]
Ma, Maining [2 ,3 ]
Wei, Shuyi [1 ,3 ]
Li, BaoSheng [4 ]
Chen, Zhiqiang [5 ]
Xie, Hongsen [1 ]
机构：
[1] Chinese Acad Sci, Inst Geochem, Study Earths Interior, Lab High Temp & High Pressure, Guiyang 550002, Peoples R China
[2] Chinese Acad Sci, Key Lab Computat Geodynam, Beijing 100049, Peoples R China
[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[4] SUNY Stony Brook, Inst Mineral Phys, Stony Brook, NY 11794 USA
[5] SUNY Stony Brook, Dept Geosci, Stony Brook, NY 11794 USA
来源：
HIGH TEMPERATURES-HIGH PRESSURES | 2013年 / 42卷 / 03期
基金：
中国国家自然科学基金; 中国科学院西部之光基金;
关键词：
Scorodite; synchrotron X-ray diffraction; equation of state; high pressure; compressibility; REFINEMENT; CELL;
D O I：
暂无
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The compression behavior of a natural scorodite has been investigated to about 8.21 GPa at 300 K for the fist time using in situ angle-dispersive X-ray diffraction and a diamond anvil cell at beamline X17C, National Synchrotron Light Source, Brookhaven National Laboratory. Over this pressure range, no phase change or disproportionation has been observed. The isothermal equation of state was determined for the first time. The values of V-0, K-0, and K'(0) refined with a third-order Birch-Murnaghan equation of state are V-0 = 934.2 +/- 0.3 angstrom(3), K-0 = 61.8 +/- 2.5 GPa, and K'(0)= 6.6 +/- 0.9. Furthermore, we confirm that the linear compressibilities (beta) along a, b and c directions of scorodite is elastically anisotropic.
引用
收藏
页码：203 / 209
页数：7
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