Application of Statistical Moment Method to Thermodynamic Properties of Metals at High Pressures : Condensed Matter: Structure, etc.

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概要

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• The moment method in statistical dynamics is used to study the thermodynamic properties of metals taking into account the anharmonicity effects of the lattice vibrations and hydrostatic pressures. The explicit expressions of the lattice constant, thermal expansion coefficient, and the specific heats C_v and C_p of cubic (fcc) metals are derived within the fourth order moment approximation. The thermodynamic quantities of Al, Au, Ag, Cu, and Pt metals are calculated as a function of the pressure, and they are in good agreement with the corresponding experimental results. The effective pair potentials work well for the calculations of transition and noble metals, compared to those of the sp-valence metals. For obtaining better agreement of the thermodynamic quantities of metals like Al, it is required at least to use the more sophisticated electronic many body potentials. In general, it has been shown that the anharmonicity effects of lattice vibration play a dominant role in determining the thermodynamic properties of metals under high pressures and at the finite (high) temperatures.

• 社団法人日本物理学会の論文
• 2000-07-15

著者

• Masuda-jindo Kinichi

  Department Of Material Science And Engineering Tokyo Institute Of Technology

• Hung Vu

  Department Of Materials Science And Engineering Tokyo Institute Of Technology:hanoi National Pedagog

• MASUDA-JlNDO Kinichi

  Department of Materials Science and Engineering, Tokyo Institute of Technology

• Masuda-jlndo Kinichi

  Department Of Materials Science And Engineering Tokyo Institute Of Technology

関連論文

• Calculation of Elastic Constants of Cubic Metals by Statistical Moment Method : Temperature Dependence(Cross-disciplinary physics and related areas of science and technology)
• Study of Self-Diffusion in Silicon at High Pressure(Condensed Matter : Structure, Mechanical and Thermal Properties)
• Application of Statistical Moment Method to Thermodynamic Properties of Metals at High Pressures : Condensed Matter: Structure, etc.
• Study of Self-Diffusion in Metals by Statistical Moment Method: Anharmonic Effects : Cross-Disciplinary Physics
• Tight-Binding Theory in the Computational Materials Science

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