Glass Forming Ability in the Equilibrium Immiscible Ag-Ta System Studied by Molecular Dynamics Simulation and Ion Beam Mixing(Condensed matter: structure and mechanical and thermal properties)

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概要

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• For the equilibrium immiscible Ag-Ta system characterized by a positive heat of formation of +23kJ/mol, a proved realistic extended Finnis-Sinclair potential is applied to study the crystal-to-amorphous transition through molecular dynamics simulations and a glass-forming range (GFR) of the Ag-Ta system is determined to be from 10 to 80at. % of Ta, within which a disordered state is energetically favored than its crystalline counterpart of solid solution. In experiment, the uniform amorphous phases are indeed obtained, by ion beam mixing of far-from-equilibrium, in the Ag_<38>Ta_<62>, Ag_<30>Ta_<70> and Ag_<20>Ta_<80> Ag-Ta multilayered films, which fall within the GFR and thus confirm the relevance of the calculated GFR of the system.

• 社団法人日本物理学会の論文
• 2008-07-15

著者

• Liu Baixin

  Advanced Materials Laboratory Department Of Materials Science And Engineering Tsinghua University

• ZHAO Man

  Advanced Materials Laboratory, Department of Materials Science and Engineering, Tsinghua University

• DAI Xiaodong

  Advanced Materials Laboratory, Department of Materials Science and Engineering, Tsinghua University

• SHEN Yixiong

  Advanced Materials Laboratory, Department of Materials Science and Engineering, Tsinghua University

• Zhao Man

  Advanced Materials Laboratory Department Of Materials Science And Engineering Tsinghua University

• Shen Yixiong

  Advanced Materials Laboratory Department Of Materials Science And Engineering Tsinghua University

• Dai Xiaodong

  Advanced Materials Laboratory Department Of Materials Science And Engineering Tsinghua University

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