Compressibility of zinc sulfide nanoparticles

被引：33
|
作者：
Gilbert, B. [1 ]
Zhang, H.
Chen, B.
Kunz, M.
Huang, F.
Banfield, J. F.
机构：
[1] Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA
[2] Univ Calif Berkeley, Dept Earth & Planetary Sci, Berkeley, CA 94720 USA
[3] Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA
[4] Chinese Acad Sci, Fujian Inst Res Struct Matter, Fujian 350002, Peoples R China
来源：
PHYSICAL REVIEW B | 2006年 / 74卷 / 11期
关键词：
D O I：
10.1103/PhysRevB.74.115405
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We describe a high-pressure x-ray diffraction (XRD) study of the compressibility of several samples of ZnS nanoparticles. The nanoparticles were synthesized with a range of sizes and surface chemical treatments in order to identify the factors that determine nanoparticle compressibility. Refinement of the XRD data revealed that all ZnS nanoparticles in the nominally cubic (sphalerite) phase exhibited a previously unobserved structural distortion under ambient conditions that exhibited, in addition, a dependence on pressure. Our results show that the compressibility of ZnS nanoparticles increases substantially as the particle size decreases, and we propose an interpretation based upon the available mechanisms of structural compliance in nanoscale vs bulk materials.
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页数：7
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