高エネルギーX線を用いた非晶質物質の精密構造解析

抄録

Structural analysis of disordered materials is still very challenging due to the absence of translational symmetry. Diffraction patterns from disordered materials are very broad and provide information only about pair correlations. Brilliant high-energy X-rays from third-generation synchrotron radiation sources, like SPring-8, allow us to measure high-quality diffraction data for disordered materials from ambient to high temperature and/or high pressure. Such data have significantly improved our capabilities to grasp the ‘order within disorder’. Here, we describe the progress in terms of the instrumentation for using high-energy X-rays at SPring-8 over the last 20 years. Advanced methods of data analysis, that help to understand structural ordering hidden in pairwise correlations of disordered materials, are also introduced.