Dynamics signature of polyamorphic transition and single-crystal crystallization in Ce-Al metallic glass under high pressure

We propose to study the atomic relaxation dynamics of the Ce-Al MGs during both compression and decompression from ambient pressure through the polyamorphic transition and eventually close-to-crystallization pressure (~25 GPa) at room temperature. These results will provide critical dynamic information for us to understand the transition process and underlying mechanism for the unusual phenomena in Ce-Al MGs and also the relationship between dynamics and structures of glasses in general.

我们拟于室温下研究铈铝金属玻璃（Ce-Al metallic glasses，MGs）从常压经多形转变（polyamorphic transition）直至近结晶压力（~25 GPa）过程中压缩与解压阶段的原子弛豫动力学（atomic relaxation dynamics）。这些结果将为理解铈铝金属玻璃中异常现象的转变过程及内在机制，以及更普遍的玻璃动力学与结构之间的关系，提供关键的动力学信息。