Dynamical and structural heterogeneities play important roles in glass transition. However, the relationship between these heterogeneities has not been fully revealed. In this study, we simultaneously observed these heterogeneities near the glass transition temperature in Zr50Cu40Al10 via five-dimensional scanning transmission electron microscopy (5D-STEM), which can record the spatiotemporal distribution of diffraction patterns. We estimated local dynamics from the temporal series of diffraction patterns and local structural orders from the diffraction patterns themselves. By performing this estimation for all scanning points, we visualized the heterogeneities and found the correlation between them, which indicated that ordered structures tended to have slow dynamics.
- Katsuaki Nakazawa
- Kazutaka Mitsuishi
- Koichi Tsuchiya
