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High-pressure x-ray diffraction and Raman spectroscopy of phase transitions in Sm2O3
Jiang, Sheng; Liu, Jing; Lin, Chuanlong; Li, Xiaodong; Li, Yanchun
2013
Source PublicationJOURNAL OF APPLIED PHYSICS
ISSN0021-8979
Volume113Issue:11
AbstractThe structural phase transitions in Sm2O3 with mixed phases of cubic and monoclinic as starting material were studied by in situ high-pressure synchrotron angle dispersive x-ray diffraction and Raman scattering measurements up to 40.1 GPa and 41.0 GPa, respectively. The x-ray diffraction data indicate that the monoclinic and cubic phases begin to transform to a hexagonal phase at 2.5 and 4.2 GPa, respectively. The hexagonal phase is stable up to at least 40.1 GPa and could not be quenched to ambient conditions. These phase transitions have also been confirmed by Raman spectroscopy. A third-order Birch-Murnaghan fit based on the observed pressure-volume data yields zero pressure bulk moduli B-0 = 149(2), 153(7), and 155(5) GPa for cubic, monoclinic, and hexagonal phases, respectively, when their first pressure derivatives (B'(0)) were fixed as 4. The pressure coefficients of Raman peaks and the mode Gruneisen parameters of different Raman modes were also obtained. Coupled with previous results, we conclude that the transition pressure of medium rare-earth sesquioxides from the cubic and monoclinic to the hexagonal phase increase with the decreasing of the cation radius. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4795504]
Indexed BySCI
Language英语
Funding Project应物所项目组
WOS IDWOS:000316545200016
Citation statistics
Cited Times:28[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/13770
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. High-pressure x-ray diffraction and Raman spectroscopy of phase transitions in Sm2O3[J]. JOURNAL OF APPLIED PHYSICS,2013,113(11).
APA Jiang, Sheng,Liu, Jing,Lin, Chuanlong,Li, Xiaodong,&Li, Yanchun.(2013).High-pressure x-ray diffraction and Raman spectroscopy of phase transitions in Sm2O3.JOURNAL OF APPLIED PHYSICS,113(11).
MLA Jiang, Sheng,et al."High-pressure x-ray diffraction and Raman spectroscopy of phase transitions in Sm2O3".JOURNAL OF APPLIED PHYSICS 113.11(2013).
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