The role of liquid–liquid transition in glass formation of CuZr alloys

Literature Information

Publication Date 2017-05-31
DOI 10.1039/C7CP02111A
Impact Factor 3.676
Authors

Xi Zhao, Chunzhen Wang, Haijiao Zheng, Zean Tian, Lina Hu


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Abstract

Some glass-forming liquids have different liquid phases that have the same composition but different structure, density and entropy. Based on experimental and molecular dynamics simulation, we here report thermodynamic, dynamic, and structural evidence of the liquid–liquid transition (LLT) in ten Cu–Zr glass-forming liquids well above the liquidus temperature. We find that for Cu–Zr alloys, the LLT is beneficial to glass formation, and there is a close relationship between the relative transition strength (RTS) of the LLT and the critical thickness representing the glass forming ability (GFA): the bigger the value of the RTS parameters, the stronger the GFA of Cu–Zr alloys. This work not only uncovers the role of the LLT of melts in the glass formation of solids, but also sheds light on the inheritance of properties of glassy solids from the aspect of the detectable dynamics of high-temperature melts.

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Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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