Structural transformations in cubic Dy2O3 at high pressures

CAS OpenIR > 中科院上海应用物理研究所2011-2019年

	Structural transformations in cubic Dy2O3 at high pressures
	Jiang, Sheng; Liu, Jing; Lin, Chuanlong; Bai, Ligang; Zhang, Yufeng; Li, Xiaodong; Li, Yanchun; Tang, Lingyun; Wang, Hua
	2013
Source Publication	SOLID STATE COMMUNICATIONS
ISSN	0038-1098
Volume	169 Pages:CONCATENATE(Sheet1!I322,-Sheet1!J322)
Abstract	The structural stability of cubic Dy2O3 under high pressure has been investigated using synchrotron radiation in a diamond anvil cell up to 49.0 GPa. The diffraction data reveals the cubic phase undergoes two successive phase transitions on compression. The phase transition from a cubic to a monoclinic structure starts at 7.7 GPa and is complete at 18.8 GPa with a similar to 7.9% volume collapse. The monoclinic phase further transforms to a hexagonal phase starting at similar to 10.9 GPa and the hexagonal phase becomes dominant at 26.6 GPa. This high-pressure hexagonal phase with a small amount of retained monoclinic phase is stable up to the highest pressure of 49.0 GPa in this study. After pressure release, Dy2O3 is a monoclinic structure. A third-order Birch-Murnaghan fit yields zero pressure bulk moduli (B-0) of 191(4), 179(9) and 231(22) GPa and their pressure derivatives (B'(0)) of 2.8(7), 42(6), 3.5(6) for the cubic, monoclinic and hexagonal phases, respectively. Comparing with other rare-earth sesquioxides, we confirm that the transition pressure from cubic to monoclinic phase, as well as the bulk modulus of the cubic phase, increases with the decreasing of the cation radius of rare-earth sesquioxides. (C) 2013 Elsevier Ltd. All rights reserved.
Indexed By	SCI
Language	英语
Funding Project	应物所项目组
WOS ID	WOS:000324452400009
Citation statistics	Cited Times:22[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.sinap.ac.cn/handle/331007/13921
Collection	中科院上海应用物理研究所2011-2019年
Recommended Citation GB/T 7714	Jiang, Sheng,Liu, Jing,Lin, Chuanlong,et al. Structural transformations in cubic Dy2O3 at high pressures[J]. SOLID STATE COMMUNICATIONS,2013,169:CONCATENATE(Sheet1!I322,-Sheet1!J322).
APA	Jiang, Sheng.,Liu, Jing.,Lin, Chuanlong.,Bai, Ligang.,Zhang, Yufeng.,...&Wang, Hua.(2013).Structural transformations in cubic Dy2O3 at high pressures.SOLID STATE COMMUNICATIONS,169,CONCATENATE(Sheet1!I322,-Sheet1!J322).
MLA	Jiang, Sheng,et al."Structural transformations in cubic Dy2O3 at high pressures".SOLID STATE COMMUNICATIONS 169(2013):CONCATENATE(Sheet1!I322,-Sheet1!J322).

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