(111)轴向锑化铟单晶冲击相变研究

 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ΔV/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。

SHOCK INDUCED PHASE TRANSITIONS OF SINGLE CRYSTAL InSb ALONG (111) AXIS

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 3.8GPa.It is found that the incipient pressure of phase transition for InSb single crystal shifted from 2.3GPa under static compression to 1.727GPa under shock loading.The maximum relative strain of volume (v/v 0) equals to 15.31%,corresponding to the maximum shear stress of0.681GPa.Shear stress level is about 83% and the average hydrostatic pressure of phase transition decreased from 2.3GPa under static to 0.823GPa under shock.Therefore shear stress will have great effects on induction of the phase transition in InSb single crystal.