Pressure-Induced Structural Transformations in Amorphous InSb

Pressure-induced structural transformations in amorphous InSb have been studied by X-ray diffraction at room temperature. Amorphous InSb slowly transforms to a crystalline modification with NaCl-type structure at pressures from 4 to 28 kbar, and to β-Sn-type structure or its modified tetragonal structure above 28 kbar. After releasing pressure the NaCl-type modification below 28 kbar is retained at atmospheric pressure and room temperature, whereas the high pressure modification formed above 28 kbar transforms to a crystalline mixture of NaCl-type and ZnS-type structures.