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Temperature-induced atomic structural evolution in a liquid Ga-based alloy

DOI: 10.1016/j.vacuum.2019.108966 DOI Help

Authors: Mengwan Li (Harbin Institute of Technology) , Yongjiang Huang (Harbin Institute of Technology) , Peng Xue (Harbin Institute of Technology) , Songshan Jiang (Harbin Institute of Technology) , Weinan Ru (Harbin Institute of Technology) , Zhiqin Yang (Harbin Institute of Technology) , Hangboce Yin (Harbin Institute of Technology) , Dominik Daisenberger (Diamond Light Source) , Hongxian Shen (Harbin Institute of Technology) , Jianfei Sun (Harbin Institute of Technology)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Vacuum , VOL 170

State: Published (Approved)
Published: December 2019
Diamond Proposal Number(s): 9902 , 8858 , 17412

Abstract: The atomic-scale structural evolution of Ga68.5In21·5Sn10 (wt. %) liquid alloy has been explored utilizing in-situ high-energy synchrotron X-ray diffraction from room temperature (293 K) to around the melting point. During the process of decreasing temperature, bond lengths of dominant atomic pairs decrease, whereas the total coordination numbers of the first nearest neighbor shell increase. This structural transition is ascribed to the redistribution of atoms and/or clusters and the decrease of vacancies induced by decreasing temperature. Our results are supportive for further understanding the atomic-scale structural evolution of liquid alloys at the low-temperature condition.

Journal Keywords: Liquid alloy; Low temperature; Structural evolution; The first nearest neighbor shell; High-energy synchrotron X-ray diffraction

Subject Areas: Materials

Instruments: I15-Extreme Conditions