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

被引：0

作者：

马策 ^{[1
]}

窦作勇 ^{[1
]}

祝洪洋 ^{[2
]}

付广艳 ^{[1
]}

谈笑 ^{[1
]}

白彬 ^{[1
]}

张鹏程 ^{[1
]}

崔啟良 ^{[2
]}

机构：

[1] Science and Technology on Surface Physics and Chemistry Laboratory

[2] State Key Laboratory of Superhard Materials Jilin University

来源：

Chinese Physics B | 2016年 / 04期

关键词：

cerium; equation of state; high pressure; phase transition;

D O I：

暂无

中图分类号：

O521.23 [];

学科分类号：

070205 ;

摘要：

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.

引用

页码：296 / 299

页数：4

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