Study of high pressure structural stability of CeO2 nanoparticles

	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
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.
学科主题	Physics
收录类别	SCI
WOS记录号	WOS:000323996000017
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/224763]
专题	高能物理研究所_多学科研究中心
推荐引用方式 GB/T 7714	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.