Structure phase transformation and equation of state of cerium metal under pressures up to 51 GPaProject supported by the National Natural Science Foundation of China (Grant No. NSAF.U1330115) and the National Major Scientific Instrument and Equipment Development Project of China (Grant No. 2012YQ130234)

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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Published inChinese physics B Vol. 25; no. 4
Main Authors Ma, Ce, Dou, Zuo-Yong, Zhu, Hong-Yang, Fu, Guang-Yan, Tan, Xiao, Bai, Bin, Zhang, Peng-Cheng, Cui, Qi-Liang
Format Journal Article
LanguageEnglish
Published IOP Publishing 25.02.2016
Subjects
cerium
equation of state
high pressure
phase transition
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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-Murnaghan 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 ε-Ce has a maximum value at about 29 GPa, i.e., c/a ≈ 1.690.
ISSN:1674-1056
DOI:10.1088/1674-1056/25/4/046401