超高压下CsBr的结构与相变

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超高压下CsBr的结构与相变

王莉君, 陈良辰, 李凤英, 顾惠成, 周镭, 车荣钲

文章导航 > 高压物理学报 > 1998 > 12(2): 92-96 .

王莉君, 陈良辰, 李凤英, 顾惠成, 周镭, 车荣钲. 超高压下CsBr的结构与相变[J]. 高压物理学报, 1998, 12(2): 92-96 . doi: 10.11858/gywlxb.1998.02.003

引用本文:

王莉君, 陈良辰, 李凤英, 顾惠成, 周镭, 车荣钲. 超高压下CsBr的结构与相变[J]. 高压物理学报, 1998, 12(2): 92-96 . doi: 10.11858/gywlxb.1998.02.003

WANG Li-Jun, CHEN Liang-Chen, LI Feng-Ying, GU Hui-Cheng, ZHOU Lei, CHE Rong-Zheng. The Structure and Phase Transition for CsBr under Ultra-High Pressure[J]. Chinese Journal of High Pressure Physics, 1998, 12(2): 92-96 . doi: 10.11858/gywlxb.1998.02.003

Citation:

WANG Li-Jun, CHEN Liang-Chen, LI Feng-Ying, GU Hui-Cheng, ZHOU Lei, CHE Rong-Zheng. The Structure and Phase Transition for CsBr under Ultra-High Pressure[J]. Chinese Journal of High Pressure Physics, 1998, 12(2): 92-96 . doi: 10.11858/gywlxb.1998.02.003

王莉君, 陈良辰, 李凤英, 顾惠成, 周镭, 车荣钲. 超高压下CsBr的结构与相变[J]. 高压物理学报, 1998, 12(2): 92-96 . doi: 10.11858/gywlxb.1998.02.003

引用本文:

王莉君, 陈良辰, 李凤英, 顾惠成, 周镭, 车荣钲. 超高压下CsBr的结构与相变[J]. 高压物理学报, 1998, 12(2): 92-96 . doi: 10.11858/gywlxb.1998.02.003

WANG Li-Jun, CHEN Liang-Chen, LI Feng-Ying, GU Hui-Cheng, ZHOU Lei, CHE Rong-Zheng. The Structure and Phase Transition for CsBr under Ultra-High Pressure[J]. Chinese Journal of High Pressure Physics, 1998, 12(2): 92-96 . doi: 10.11858/gywlxb.1998.02.003

Citation:

WANG Li-Jun, CHEN Liang-Chen, LI Feng-Ying, GU Hui-Cheng, ZHOU Lei, CHE Rong-Zheng. The Structure and Phase Transition for CsBr under Ultra-High Pressure[J]. Chinese Journal of High Pressure Physics, 1998, 12(2): 92-96 . doi: 10.11858/gywlxb.1998.02.003

超高压下CsBr的结构与相变

doi: 10.11858/gywlxb.1998.02.003

中国科学院物理研究所，北京 100080

通讯作者:
王莉君

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出版历程
- 收稿日期: 1997-11-14
- 修回日期: 1998-01-12
- 发布日期: 1998-06-05

The Structure and Phase Transition for CsBr under Ultra-High Pressure

Institute of Physics, Academia Sinica, Beijing 100080, China

More Information

Corresponding author: WANG Li-Jun

摘要: 采用金刚石对顶压砧高压装置（DAC）、同步辐射X光源和能散法，对CsBr粉末样品进行了原位高压X光衍射实验，最高压力达115 GPa。观测到在53 GPa左右压力下，CsBr的最强衍射峰(110)劈裂成两个峰，标志了简单立方结构向四方结构的转变；在0至最高压力范围内（相应于V/V0为1至0.463）测量了晶轴比c/a；在115 GPa内未观测到样品的金属化现象。
- CsBr /
- 同步辐射 /
- 高压X射线衍射
Abstract: In situ energy dispersive X-ray diffraction measurements on CsBr under pressure up to 115 GPa have been performed by using pressure device－diamond anvil cell (DAC) with synchrotron source. It is determined that the structure of CsBr is changed from simple cubic phase to tetragonal phase at about 53 GPa marked by the splitting of its strongest diffraction line (110) into two parts: (011) and (110). The lattice parameter ratio c/a has been measured from p=0 to the maximum pressure (corresponds to V/V0 range of 1～0.463). No pressure-induced metallization transition has been observed at higher pressure up to 115 GPa.
- CsBr /
- synchrotron radiation /
- high pressure X-ray diffraction

参考文献(5)

王莉君, 等. 高压物理学报, 1995, 9: 139.

Mao H K, Wu Y, Hemley R J, et al. Science, 1989, 246: 649.

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