Quasi-hydrostatic Limit of LiF as a Pressure Transmitting Medium and Its Equation of States

Quasihydrostatic limit of LiF as a pressure transmitting medium is investigated by synchrotron radiation x-ray diffraction combined with the diamond anvil cells technique up to 60 GPa at room temperature. The equation-of- state parameters of LiF are determined to be Vo = 65.7（2）A3 Bo = 58（3） GPa and...

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Published inChinese physics letters Vol. 31; no. 5; pp. 107 - 109
Main Author 郭家增 吴也 朱峰 巫翔 杨科 秦善
Format Journal Article
LanguageEnglish
Published 01.05.2014
Subjects
Chambers
Diamond anvil cells
Diffraction
Synchrotrons
Texts
Titanium dioxide
Transmission
X-rays
X-射线衍射
传递介质
压力分布
成员国
极限
氟化锂
状态方程
静力
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ISSN0256-307X
1741-3540
DOI10.1088/0256-307X/31/5/056201

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Summary:Quasihydrostatic limit of LiF as a pressure transmitting medium is investigated by synchrotron radiation x-ray diffraction combined with the diamond anvil cells technique up to 60 GPa at room temperature. The equation-of- state parameters of LiF are determined to be Vo = 65.7（2）A3 Bo = 58（3） GPa and B＇0 = 4.9（2） in the silicon oil environment; Vo = 67.4（3） A3, Bo = 51（3） GPa and B＇0 = 4.7（2） without pressure transmitting medium. The full width at half maximum of LiF （111） peak increases with the increase of pressure in two independent experiments. The pressure distribution in the sample chamber is estimated by line-scanning x-ray diffraction measurements across the chamber＇s center, which presents as homogeneous with Pmax - Pmin Of about 1 GPa below 40 GPa.
Bibliography:11-1959/O4
GUO Jia-Zeng, WU Ye, ZHU Feng, WU Xiang, YANG Ke, QIN Shan（ 1 Key Laboratory of Orogenic Belts and Crustal Evolution （Ministry of Education）, and School of Earth and Space Sciences, Peking University, Beijing 100871 2Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204）
Quasihydrostatic limit of LiF as a pressure transmitting medium is investigated by synchrotron radiation x-ray diffraction combined with the diamond anvil cells technique up to 60 GPa at room temperature. The equation-of- state parameters of LiF are determined to be Vo = 65.7（2）A3 Bo = 58（3） GPa and B＇0 = 4.9（2） in the silicon oil environment; Vo = 67.4（3） A3, Bo = 51（3） GPa and B＇0 = 4.7（2） without pressure transmitting medium. The full width at half maximum of LiF （111） peak increases with the increase of pressure in two independent experiments. The pressure distribution in the sample chamber is estimated by line-scanning x-ray diffraction measurements across the chamber＇s center, which presents as homogeneous with Pmax - Pmin Of about 1 GPa below 40 GPa.
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ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/31/5/056201