(111)轴向锑化铟单晶冲击相变研究

Shock-Induced Phase Transitions of Single Crystal InSb along (111) Axis

1.
Southwest Institute of Fluid Physics, Laboratory for Shock Wave and Detonation Physics Research, Chengdu 610003, China;
2.
University of Science and Technology of China, Hefei 230026, China

摘要: 利用气体炮加载方法研究了(111)轴向锑化铟（InSb）单晶的冲击相变以及剪力对冲击相变的影响。冲击加载应力为1.75~3.80 GPa。实验得到，InSb单晶相变的起始应力由静高压时的2.3 GPa下降到1.727 GPa，最大体积变化率为V/V0＝15.31%，对应的最大剪力为0.681 GPa，剪力水平为83%左右，相变平均静水压力由静高压时的2.3 GPa，下降到0.823 GPa。研究表明，剪力对锑化铟单晶相变的诱发水平有重大影响。
- 冲击相变 /
- 锑化铟单晶 /
- 剪力 /
- 气体炮
Abstract: Shock-induced phase transition along the (111)-axis of InSb single crystal were studied by using light-gas-gun techniques, along with the influences of shear stress on the phase transition. Shock pressure ranges from 1.75 to 3.8 GPa. It is found that the incipient pressure of phase transition for InSb single crystal shifted from 2.3 GPa under static compression to 1.727 GPa under shock loading. The maximum relative strain of volume (V/V0) equals to 15.31%, corresponding to the maximum shear stress of 0.681 GPa. Shear stress level is about 83% and the average hydrostatic pressure of phase transition decreased from 2.3 GPa under static to 0.823 GPa under shock. Therefore shear stress will have great effects on induction of the phase transition in InSb single crystal.
- shock induced phase transition /
- InSb single crystal /
- shear stress /
- light gas gun