Effects of high pressure on the luminescent properties of nanocrystalline and bulk Y2O3 : Eu3+

	Effects of high pressure on the luminescent properties of nanocrystalline and bulk Y2O3 : Eu3+
	Bai X.; Song H. W.; Liu B. B.; Hou Y. Y.; Pan G. H.; Ren X. G.
	2008
发表期刊	Journal of Nanoscience and Nanotechnology
ISSN	1533-4880
卷号	8 期号:3 页码:1404-1409
摘要	High pressure-induced spectral changes in a 20-nm cubic nanocrystalline yttria doped with europium and its corresponding bulk were studied in the range of 550-750 rim, corresponding to the D-5(0)-> F-7(J) (J = 0-4) transitions. The results demonstrate that the bulk Y2O3 underwent phase transition from the cubic phase to the monoclinic phase as the pressure increased to 15 GPa, while the 20-nm nanocrystals did not. This can be concluded from the fact that the D-5(0)-> F-7(0) line and the three D-5(0)-> F-7(1) sublines originating from the cubic phase disappeared, while another group of D-5(0)-> F-7(0) and D-5(0)-> F-7(1) lines appeared. In addition, the relative intensity of the peak around 630 nm to that around 611 nm varied obviously as the pressure surpassed 15 GPa. The variations in the nanocrystals were more sluggish in comparison to those in the bulk, indicating that the nanocrystalline yttria had improved compressibility, which is attributed to an increased surface energy in nanocrystals. The local environment surrounding luminescent Eu3+ in the nanocrystals and the bulk both became more disordered with the increase of the pressure. The phase transition from the cubic to the monoclinic is irreversible.
收录类别	SCI ; EI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/34320
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Bai X.,Song H. W.,Liu B. B.,et al. Effects of high pressure on the luminescent properties of nanocrystalline and bulk Y2O3 : Eu3+[J]. Journal of Nanoscience and Nanotechnology,2008,8(3):1404-1409.
APA	Bai X.,Song H. W.,Liu B. B.,Hou Y. Y.,Pan G. H.,&Ren X. G..(2008).Effects of high pressure on the luminescent properties of nanocrystalline and bulk Y2O3 : Eu3+.Journal of Nanoscience and Nanotechnology,8(3),1404-1409.
MLA	Bai X.,et al."Effects of high pressure on the luminescent properties of nanocrystalline and bulk Y2O3 : Eu3+".Journal of Nanoscience and Nanotechnology 8.3(2008):1404-1409.

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