Phase transitions in a hydrogen-rich compound: tetramethylsilane

Authors：Qin Zhen Xing^*; Tang Ling Yun; Liu Jing; Chen Xiao Jia

Source：Chinese Physics C, 2013, 37(9): UNSP 098001.

DOI：10.1088/1674-1137/37/9/098001

• high-pressure
• hydrogen-rich
• phase transition

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.

• Institution
  华南理工大学