In-situ synchrotron powder X-ray diffraction study of vanadinite at room temperature and high pressure

被引：0

作者：

Fan, Dawei ^{[1
]}

Ma, Maining ^{[2
,3
]}

Wei, Shuyi ^{[1
,2
]}

Chen, Zhiqiang ^{[4
]}

Xie, Hongsen ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Geochem, Lab High Temp & High Pressure Study Earths Interi, Guiyang 550002, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Chinese Acad Sci, Key Lab Computat Geodynam, Beijing 100049, Peoples R China

[4] SUNY Stony Brook, Dept Geosci, Stony Brook, NY 11794 USA

来源：

HIGH TEMPERATURES-HIGH PRESSURES | 2013年 / 42卷 / 05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：

High pressure; Synchrotron radiation X-ray diffraction; Equation of state; Vanadinite; BULK MODULUS; INTERMETALLIC COMPOUNDS; LEAD FLUORAPATITE; ELECTRONEGATIVITY; STATE; COMPRESSIBILITY; SUBSTITUTION; PYROMORPHITE; EQUATIONS; APATITE;

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 vanadinite has been investigated using in situ angle-dispersive X-ray diffraction and a diamond anvil cell up to 8.74GPa, respectively. No phase transition of vanadinite was observed within the experimental pressure range. The isothermal equation of state was determined. The values of Ko, and A refined with a third-order BirchMumaghan equation of state are K-o = 55 1 GPa and A = 6.1 +/- 0.5 for vanadinite. Furthermore, we obtained that the axial compressibilities of the natural vanadinite (6.94 x 10(-3)GPa(-1) and 3.83 x 10(-3)GPa(-1)for the a- and c-axis of vanadinite, respectively). In addition, combining with previous results, the compositional dependence of the bulk modulus and its pressure derivative of vanadinite are discussed.

引用

页码：441 / 449

页数：9

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