Structural stability and Raman scattering of ZnSe nanoribbons under high pressure
文献类型：期刊论文
| 作者 | 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 |
| 刊名 | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| 出版日期 | 2009 |
| 卷号 | 480期号:2页码:798 |
| 关键词 | PHASE-TRANSITIONS X-RAY SEMICONDUCTORS DEPENDENCE NANOPARTICLES SPECTROSCOPY ZN1-XMNXSE CDSE |
| ISSN号 | 0925-8388 |
| 通讯作者 | Yu, RC (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, POB 603, Beijing 100190, Peoples R China. |
| 中文摘要 | 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. |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [10774168, 50621061]; State Key Development Program for Basic Research of China [2005CB623602, 2007CB925003] |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/53362]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | 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. |
| APA | Yao, LD.,Wang, FF.,Shen, X.,You, SJ.,Yang, LX.,...&Yu, RC.(2009).Structural stability and Raman scattering of ZnSe nanoribbons under high pressure.JOURNAL OF ALLOYS AND COMPOUNDS,480(2),798. |
| 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. |
入库方式： OAI收割
来源：物理研究所
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