Phase transitions in a hydrogen-rich compound： tetramethylsilane

High-pressure behavior of tetramethylsilane is investigated by synchrotron powder X-ray diffraction and Raman scattering at pressures up to 30 GPa and room temperature. Our results reveal the analogous phase transitions, though slight hysteresis for the certain phases. A new phase is found to appear...

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Bibliographic Details
Published in:Chinese physics C 2013-09, Vol.37 (9), p.84-88
Main Author: 秦振兴 唐玲云 刘景 陈晓嘉
Format: Article
Language:English
Subjects:
Bonding
Diffraction
Evolution
Hysteresis
Phase transformations
Raman scattering
Synchrotrons
X-rays
X-射线粉末衍射
化合物
同步辐射
四甲基硅烷
富氢
拉曼散射
相变
行为研究
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Summary:High-pressure behavior of tetramethylsilane is investigated by synchrotron powder X-ray diffraction and Raman scattering at pressures up to 30 GPa and room temperature. Our results reveal the analogous phase transitions, though slight hysteresis for the certain phases. A new phase is found to appear at 4.2 GPa due to the disappeared Raman mode. These findings offer the possibility to understand the evolution of the H-H bonding with pressure in such hydrogen-rich compounds.
ISSN:1674-1137
0254-3052
DOI:10.1088/1674-1137/37/9/098001