Structure phase transformation and equation of state of cerium metal under pressures up to 51 GPa

This study presents high pressure phase transitions and equation of states of cerium under pressures up to 51 GPa at room temperature. The angle-dispersive x-ray diffraction experiments are carried out using a high energy synchrotron x-ray source. The bulk moduli of high pressure phases of cerium ar...

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Bibliographic Details
Published inChinese physics B Vol. 25; no. 4; pp. 292 - 295
Main Author 马策 窦作勇 祝洪洋 付广艳 谈笑 白彬 张鹏程 崔啟良
Format Journal Article
LanguageEnglish
Published 01.04.2016
Subjects
Cerium
Diffraction
Equations of state
Mathematical analysis
Phase transformations
Synchrotrons
X-ray sources
X-rays
X-射线
压力
状态方程
结构相变
衍射实验
角度色散
金属铈
高压相变
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Summary:This study presents high pressure phase transitions and equation of states of cerium under pressures up to 51 GPa at room temperature. The angle-dispersive x-ray diffraction experiments are carried out using a high energy synchrotron x-ray source. The bulk moduli of high pressure phases of cerium are calculated using the Birch-Mumaghan equation. We discuss and correct several previous controversial conclusions, which are caused by the measurement accuracy or personal explanation. The c/a axial ratio of e-Ce has a maximum value at about 29 GPa, i.e., c/a ≈ 1.690.
Bibliography:This study presents high pressure phase transitions and equation of states of cerium under pressures up to 51 GPa at room temperature. The angle-dispersive x-ray diffraction experiments are carried out using a high energy synchrotron x-ray source. The bulk moduli of high pressure phases of cerium are calculated using the Birch-Mumaghan equation. We discuss and correct several previous controversial conclusions, which are caused by the measurement accuracy or personal explanation. The c/a axial ratio of e-Ce has a maximum value at about 29 GPa, i.e., c/a ≈ 1.690.
11-5639/O4
cerium, equation of state, high pressure, phase transition
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/25/4/046401