The void and meso-scale structure in the liquid chalcogens

点击翻译按钮获取中文摘要

The metal to nonmetal transition occurs in the liquid Se and liquid Se-Te mixtures with increasing temperature. The structural change at this transition was investigated with X-ray scattering measurements at high temperature and under high pressure by using the BL28B2 beam line at SPring8. In order to investigate the intermediate scale structural change, the reverse Monte Carlo technique and the void structure analysis with Delaunay dividing method were developed. It was found that around the transition region the structure of chalcogen chains changed from helix to zigzag or ring ones.