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Phase transitions in bismuth under rapid compression |
| Dong-Liang Yang(杨栋亮)1, Jing Liu(刘景)1, Chuan-Long Lin(林传龙)2, Qiu-Min Jing(敬秋民)3, Yi Zhang(张毅)3, Yu Gong(宫宇)1, Yan-Chun Li(李延春)1, Xiao-Dong Li(李晓东)1 |
1 Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Science, Beijing 100049, China;
2 Center for High Pressure Science and Technology Advanced Research, Beijing 100094, China;
3 National Key Laboratory for Shock Wave and Detonation Physics, Institute of Fluid Physics, Chinese Academy of Engineering Physics, Mianyang 621900, China |
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Abstract The structural phase transitions of bismuth under rapid compression has been investigated in a dynamic diamond anvil cell using time-resolved synchrotron x-ray diffraction. As the pressure increases, the transformations from phase I, to phase Ⅱ, to phase Ⅲ, and then to phase V have been observed under different compression rates at 300 K. Compared with static compression results, no new phase transition sequence appears under rapid compression at compression rate from 0.20 GPa/s to 183.8 GPa/s. However, during the process across the transition from phase Ⅲ to phase V, the volume fraction of product phase as a function of pressure can be well fitted by a compression-rate-dependent sigmoidal curve. The resulting parameters indicate that the activation energy related to this phase transition, as well as the onset transition pressure, shows a compression-rate-dependent performance. A strong dependence of over-pressurization on compression rate occurs under rapid compression. A formula for over-pressure has been proposed, which can be used to quantify the over-pressurization.
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Received: 17 December 2018
Revised: 08 January 2019
Accepted manuscript online:
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PACS:
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62.50.-p
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(High-pressure effects in solids and liquids)
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78.47.D-
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(Time resolved spectroscopy (>1 psec))
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61.05.cp
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(X-ray diffraction)
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07.35.+k
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(High-pressure apparatus; shock tubes; diamond anvil cells)
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| Fund: Project supported by the Joint Fund of the National Natural Science Foundation of China and the China Academy of Engineering Physics (NSAF) (Grant No. U1530134), the Foundation of National Key Laboratory of Shock Wave and Detonation Physics, China (Grant No. 6142A0306010817), and the Chinese Academy of Sciences (Grant Nos. KJCX2-SW-N20 and KJCX2-SW-N03). |
Corresponding Authors:
Dong-Liang Yang, Jing Li
E-mail: yangdl@ihep.ac.cn;liuj@ihep.ac.cn
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Cite this article:
Dong-Liang Yang(杨栋亮), Jing Liu(刘景), Chuan-Long Lin(林传龙), Qiu-Min Jing(敬秋民), Yi Zhang(张毅), Yu Gong(宫宇), Yan-Chun Li(李延春), Xiao-Dong Li(李晓东) Phase transitions in bismuth under rapid compression 2019 Chin. Phys. B 28 036201
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