Structure-dynamics relation in metallic glass revealed by 5-dimensional scanning transmission electron microscopy

IF 8.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Npg Asia Materials Pub Date : 2024-11-15 DOI:10.1038/s41427-024-00577-1

Katsuaki Nakazawa, Kazutaka Mitsuishi, Konstantin Iakoubovskii, Shinji Kohara, Koichi Tsuchiya

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Abstract

Dynamical and structural heterogeneities play an important role in glass transition phenomena. However, the relation between these heterogeneities is not fully revealed. In this study, we simultaneously observed these heterogeneities near the glass transition temperature in Zr50Cu40Al10 using five-dimensional scanning transmission electron microscopy, which can record the spatiotemporal distribution of diffraction patterns. The heterogeneities were visualized with sub-nanometer resolution, and a correlation between them was measured up to the glass transition temperature. We verified that ordered structures had slow dynamics, and the order decreased as the temperature increased. 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.

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来源期刊

Npg Asia Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

15.40

自引率

1.00%

发文量

审稿时长

2 months

期刊介绍： NPG Asia Materials is an open access, international journal that publishes peer-reviewed review and primary research articles in the field of materials sciences. The journal has a global outlook and reach, with a base in the Asia-Pacific region to reflect the significant and growing output of materials research from this area. The target audience for NPG Asia Materials is scientists and researchers involved in materials research, covering a wide range of disciplines including physical and chemical sciences, biotechnology, and nanotechnology. The journal particularly welcomes high-quality articles from rapidly advancing areas that bridge the gap between materials science and engineering, as well as the classical disciplines of physics, chemistry, and biology. NPG Asia Materials is abstracted/indexed in Journal Citation Reports/Science Edition Web of Knowledge, Google Scholar, Chemical Abstract Services, Scopus, Ulrichsweb (ProQuest), and Scirus.