High pressure structural and elastic properties of NiO up to 67 GPa
High pressure structural and elastic properties of NiO up to 67 GPa
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NiO 的高压结构和弹性性能高达 67 GPa
DOI：
10.1063/1.3031697
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
Ji
中科院分区：
文献类型：
--
作者：
Liyan Liu;Xingzhou Li;Jianjun Liu;Sheng Jiang;Yunming Li;G. Shen;H. Mao;Yan Bi;Ji
以氩气为压力介质，利用同步x射线衍射在金刚石砧池中研究了NiO在67gpa下的结构和弹性性能。在67gpa时，NiO仍保持菱形变形岩盐结构，未发生相变。在六边形晶格中，a和c的晶格参数随压力的增加而单调减小，而c/a比基本保持不变。通过分析不同衍射峰的线宽，研究了NiO的弹性性能，结果表明，在所研究的压力范围内，单晶弹性柔度S11分别为正，但S=(S11−S12−S44/2)为负。
Using argon as the pressure medium, the structural and elastic properties of NiO have been investigated up to 67 GPa by the in situ synchrotron x-ray diffraction in a diamond anvil cell. Up to 67 GPa, NiO remains in the rhombohedral distorted rocksalt structure without phase transition. The lattice parameters of a and c, indexed in the hexagonal lattice, were found to decrease monotonically with increasing pressure, while the c/a ratio remains almost constant. The elastic properties of NiO were studied by analyzing the linewidth of various diffraction perks, which indicates that the factor S=(S11−S12−S44/2) is negative although the single-crystal elastic compliances S11 is positive, respectively, in the investigated pressure range.
DOI：
10.1029/jb091ib05p04673
发表时间：
1986-04-10
期刊：
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS
影响因子：
--
作者：
MAO, HK;XU, J;BELL, PM
通讯作者：
BELL, PM