High-pressure X-ray diffraction study of ε-FeOOH

被引：38

作者：

Suzuki, Akio ^{[1
]}

机构：

[1] Tohoku Univ, Grad Sch Sci, Dept Earth & Planetary Mat Sci, Sendai, Miyagi 9808578, Japan

来源：

PHYSICS AND CHEMISTRY OF MINERALS | 2010年 / 37卷 / 03期

关键词：

High pressure; X-ray diffraction; Equation of state; Synchrotron radiation; PHASE DELTA-ALOOH; HYDROUS PHASE; NEUTRON-DIFFRACTION; TEMPERATURE; GPA; GENERATION; TRANSITION; STABILITY; EQUATION; STATE;

D O I：

10.1007/s00269-009-0319-x

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An in situ synchrotron X-ray diffraction study was carried out on epsilon-FeOOH at room temperature up to a pressure of 8.6 GPa using the energy-dispersive method. The linear compressibility was determined to be beta (a) = 1.69(3) x 10(-3) GPa(-1), beta (b) = 2.86(6) x 10(-3) GPa(-1), and beta (c) = 1.73(5) x 10(-3) GPa(-1). The b-axis of the unit cell is more compressible than the a and c axes. The pressure-volume data were fitted to a third-order Birch-Murnaghan equation of state. The best fit was found using a room temperature isothermal bulk modulus of K (0) = 126(3) GPa and its pressure derivative K' = 10(1).

引用

页码：153 / 157

页数：5

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