Size Dependence of Cubic to Trigonal Structural Distortion in Silver Micro- and Nanocrystals under High Pressure

被引：28

作者：

Guo, Qixun ^{[1
]}

Zhao, Yusheng ^{[1
]}

Wang, Zhongwu ^{[2
]}

Skrabalak, Sara E. ^{[3
]}

Lin, Zhijun ^{[1
]}

Xia, Younan ^{[4
]}

机构：

[1] Los Alamos Natl Lab, Los Alamos Neutron Sci Ctr, Los Alamos, NM 87545 USA

[2] Cornell Univ, Cornell High Energy Synchrotron Source, Wilson Lab, Ithaca, NY 14853 USA

[3] Indiana Univ, Dept Chem, Bloomington, IN 47405 USA

[4] Washington Univ, Dept Biomed Engn, St Louis, MO 63130 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2008年 / 112卷 / 51期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1021/jp809177n

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Silver micro- and nanocrystals with sizes of similar to 2-3.5 mu m and similar to 50-100 nm were uniaxially compressed under nonhydrostatic pressures (strong deviatoric stress) up to similar to 30 GPa at room temperature in a symmetric diamond-anvil cell and studied in situ using angle-dispersive synchrotron X-ray diffraction. A cubic to trigonal structural distortion along a 3-fold rotational axis was discovered by careful and comprehensive analysis of the apparent lattice parameter and full width at half-maximum, which are strongly dependent upon the Miller index and crystal size.

引用

页码：20135 / 20137

页数：3

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