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Structural stability and Raman scattering of ZnSe nanoribbons under high pressure
Yao, LD; Wang, FF; Shen, X; You, SJ; Yang, LX; Jiang, S; Li, YC; Zhu, K; Liu, YL; Pan, AL; Zou, BS; Liu, J; Jin, CQ; Yu, RC; Jiang S(蒋升); Li YC(李延春); Liu J(刘景)
2009
发表期刊JOURNAL OF ALLOYS AND COMPOUNDS
卷号480期号:2页码:798-801
通讯作者[Yao, L. D. ; Shen, X. ; You, S. J. ; Yang, L. X. ; Zhu, K. ; Liu, Y. L. ; Jin, C. Q. ; Yu, R. C.] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China ; [Wang, F. F. ; Pan, A. L. ; Zou, B. S.] Hunan Univ, State Key LAB CBSC, Changsha 410082, Hunan, Peoples R China ; [Wang, F. F. ; Pan, A. L. ; Zou, B. S.] Hunan Univ, Micronano Technol Res Ctr, Changsha 410082, Hunan, Peoples R China ; [Jiang, S. ; Li, Y. C. ; Liu, J.] Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China
文章类型Article
摘要The high-pressure in situ angular dispersive x-ray diffraction (ADXD) study on the zinc blende (ZB) type ZnSe nanoribbons were implemented using image-plate technique and diamond-anvil cell up to about 32 GPa. The pressure-induced structural transition from the ZB to a rocksalt (RS) type phase occurs at about 12.6 GPa, and the relative volume reduction at the transition point is close to 13%. Moreover, the variation in the relative volume with pressure seems discontinuous at about 5.5 GPa, which indicates an unidentified transition. The bulk modulus B(0) for the ZB and RS phases were determined through fitting the relative volume-pressure experimental data by Birch-Murnaghan equation of states. High-pressure Raman scattering experiments revealed that the transverse optical (TO) phonon mode splits into two peaks at about 5.5 GPa, which is compatible with the result of ADXD. The disappearance of the longitudinal optical peak above 13 GPa is due to the semiconductor-metal transition. Surprisingly, all Raman scattering peaks begin to become broad from the lower pressure (5-6 GPa) relative to the bulk ZnSe (normally similar to 11 GPa), and the corresponding TO phonons become invisible beyond 14.7 GPa. Using the values of the bulk modulus from ADXD experiments, the corresponding mode Grilneisen parameters can be obtained for the ZB phase. (C) 2009 Elsevier B.V. All rights reserved.
关键词ZnSe nanoribbons High-pressure in situ ADXD Structural transition High-pressure Raman scattering
学科领域Chemistry; Materials Science; Metallurgy & Metallurgical Engineering
研究领域[WOS]Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
DOI10.1016/j.jallcom.2009.02.105
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语种英语
研究领域[WOS]Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号WOS:000267798600131
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/238512
专题多学科研究中心
作者单位中国科学院高能物理研究所
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Yao, LD,Wang, FF,Shen, X,et al. Structural stability and Raman scattering of ZnSe nanoribbons under high pressure[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2009,480(2):798-801.
APA Yao, LD.,Wang, FF.,Shen, X.,You, SJ.,Yang, LX.,...&刘景.(2009).Structural stability and Raman scattering of ZnSe nanoribbons under high pressure.JOURNAL OF ALLOYS AND COMPOUNDS,480(2),798-801.
MLA Yao, LD,et al."Structural stability and Raman scattering of ZnSe nanoribbons under high pressure".JOURNAL OF ALLOYS AND COMPOUNDS 480.2(2009):798-801.
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