Study of high pressure structural stability of CeO2 nanoparticles
Liu, B; Liu, R; Li, QJ; Yao, MG; Zou, B; Cui, T; Liu, BB; Liu, JL;刘景
刊名CHINESE PHYSICS C
2013
卷号37期号:9页码:98003
关键词CeO2 nanomaterials high pressure experimental conditions grain size effect structural stability
学科分类Physics
DOI10.1088/1674-1137/37/9/098003
英文摘要In situ high pressure XRD diffraction and Raman spectroscopy have been performed on 12 nm CeO2 nanoparticles. Surprisingly, under quasihydrostatic conditions, 12 nm CeO2 nanoparticles maintain the fluorite-type structure in the whole pressure range (0-51 GPa) during the experiments, much more stable than the bulk counterpart (P-T similar to 31 GPa). In contrast, they experienced phase transition at pressure as low as 26 GPa under non-hydrostatic conditions (adopting CsCl as pressure medium). Additionally, 32-36 nm CeO2 nanoparticles exhibit an onset pressure of phase transition at 35 GPa under quasihydrostatic conditions, and this onset pressure is much lower than our result. Further analysis shows both the experimental condition (i.e., quasihydrostatic or non-hydrostatic) and grain size effect have a significant impact on the high pressure behaviors of CeO2 nanomaterials.
收录类别SCI
WOS记录号WOS:000323996000017
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被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/224763
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
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Liu, B,Liu, R,Li, QJ,et al. Study of high pressure structural stability of CeO2 nanoparticles[J]. CHINESE PHYSICS C,2013,37(9):98003.
APA Liu, B.,Liu, R.,Li, QJ.,Yao, MG.,Zou, B.,...&Liu, JL;刘景.(2013).Study of high pressure structural stability of CeO2 nanoparticles.CHINESE PHYSICS C,37(9),98003.
MLA Liu, B,et al."Study of high pressure structural stability of CeO2 nanoparticles".CHINESE PHYSICS C 37.9(2013):98003.
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