Decomposition of ferropericlase (Mg0.80Fe0.20)O at high pressures and temperatures

被引：9

作者：

Dubrovinsky, L

Dubrovinskaia, N

Kantor, I

McCammon, C

Crichton, W

Urusov, V

机构：

[1] Univ Bayreuth, Bayer Geoinst, D-95440 Bayreuth, Germany

[2] European Synchrotron Radiat Facil, F-38043 Grenoble, France

[3] Moscow MV Lomonosov State Univ, Dept Crystallog, Moscow 119992, Russia

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2005年 / 390卷 / 1-2期

关键词：

ferropericlase; decomposition; diamond anvil cells; laser heating;

D O I：

10.1016/j.jallcom.2004.08.027

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have heated ferropericlase (Mg0.80Fe0.20)O to temperatures of over 2300 K at pressures of above 100 GPa to investigate the stability of the solid solution at elevated P, T conditions. The in situ X-ray study in laser-heated diamond anvil cells, as well as X-ray powder diffraction and chemical analysis of recovered samples, show that ferropericlase dissociates to magnesium oxide and ferrous oxide rich components. We demonstrate the importance of the combination of different analytical techniques for studies of solid-state chemical processes at extreme conditions. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：41 / 45

页数：5

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