玻璃形成体系中的β弛豫

β-relaxation in glass forming systems

一定压强下对液体进行冷却,若避免晶化,则冷却中液体不可避免地转变为典型非晶态固体——玻璃.这种现象称为玻璃转变,是一种普遍存在的自然现象,涉及多体相互关联体系中众多基础理论问题.近几十年以来,玻璃转变问题的探索过程中,弛豫存在的普适性、其机理/物理图像及其对液体和玻璃性能认知的影响等一直是争论的热点.在梳理β弛豫研究进展的同时,本文尝试对未来β弛豫研究方向进行展望.

As soon as crystallization is suspended at constant pressure, cooling liquids turn inevitably into rigid amorphous solids, i.e. glasses. The process is a universal phenomenon in nature, termed as glass transition involving many fundamental problems in many-body interaction system and material science. Among the decades research on the glass transition, the universality of β-relaxation, its mechanism and its effects on the understanding of liquids and glasses have been studied argumentatively. In this paper we review the research progress of B-relaxation and also try to point out the tendency of β-relaxation study in future.