高压下ZnSe 纳米带的结构相变及拉曼散射研究

金恩姬 姚立德 王菲菲 沈希 游淑洁 杨留响 蒋升 李延春 朱恪 刘玉龙

金恩姬, 姚立德, 王菲菲, 沈希, 游淑洁, 杨留响, 蒋升, 李延春, 朱恪, 刘玉龙, 等. 高压下ZnSe 纳米带的结构相变及拉曼散射研究[J]. 高压物理学报, 2009, 23(4): 241-246 . doi: 10.11858/gywlxb.2009.04.001
引用本文: 金恩姬, 姚立德, 王菲菲, 沈希, 游淑洁, 杨留响, 蒋升, 李延春, 朱恪, 刘玉龙, 等. 高压下ZnSe 纳米带的结构相变及拉曼散射研究[J]. 高压物理学报, 2009, 23(4): 241-246 . doi: 10.11858/gywlxb.2009.04.001
JIN En-Ji, YAO Li-De, WANG Fei-Fei, SHEN Xi, YOU Shu-Jie, YANG Liu-Xiang, JIANG Sheng, LI Yan-Chun, et al.  , . Structural Transition and Raman Scattering of ZnSe Nanoribbons under High Pressure[J]. Chinese Journal of High Pressure Physics, 2009, 23(4): 241-246 . doi: 10.11858/gywlxb.2009.04.001
Citation: JIN En-Ji, YAO Li-De, WANG Fei-Fei, SHEN Xi, YOU Shu-Jie, YANG Liu-Xiang, JIANG Sheng, LI Yan-Chun, et al.  , . Structural Transition and Raman Scattering of ZnSe Nanoribbons under High Pressure[J]. Chinese Journal of High Pressure Physics, 2009, 23(4): 241-246 . doi: 10.11858/gywlxb.2009.04.001

高压下ZnSe 纳米带的结构相变及拉曼散射研究

doi: 10.11858/gywlxb.2009.04.001
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    通讯作者:

    金恩姬

Structural Transition and Raman Scattering of ZnSe Nanoribbons under High Pressure

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    Corresponding author: JIN En-Ji
  • 摘要: 利用高压原位角散X射线衍射实验研究了ZnSe纳米带的结构稳定性。发现样品在12.6 GPa 附近存在一个从立方闪锌矿型到立方岩盐矿型的结构相变,并且在相变点附近存在较大的体积收缩,相对体积变化率达13%。利用Birch-Murnaghan 状态方程拟合,得到了闪锌矿相的体弹模量约为56 GPa,略低于体材料的体弹模量(约67 GPa);并得到其立方岩盐矿相的体弹模量约为116 GPa。高压拉曼散射实验结果表明,横光学声子模散射峰在5.5 GPa压力附近发生劈裂,纵光学声子模散射峰在12.8 GPa压力以上逐渐消失。根据角散实验的体弹模量数据,计算得到了闪锌矿相中对应不同声子模式的格林爱森常数。

     

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出版历程
  • 收稿日期:  2008-11-24
  • 修回日期:  2009-02-27
  • 发布日期:  2009-08-15

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