Crystal structure of germanium quenched from the melt under high pressure

Publisher Website
Google Scholar
Abstract
The undercooled temperatures of germanium quenched from melt at high pressure were measured directly by a developed high-pressure differential thermal analysis method. Certain phase transitions that occur in germanium during rapid solidification from melt at pressures above 3 GPa are observed by in situ differential thermal measurements. X-ray-diffraction results show that the high-pressure phases Ge III and Ge IV form during this process. In those samples which were quenched from the deeply undercooled melt, an amorphous state of germanium is also found by high-resolution transmission electron microscopy.