Study of Self-Diffusion in Metals by Statistical Moment Method: Anharmonic Effects : Cross-Disciplinary Physics
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概要
- 論文の詳細を見る
The self-diffusion in metals is studied using the moment method in the statistical dynamics including the anharmonicity effects of lattice vibrations. The Gibbs free energy of a metal lattice containing thermal vacancies is derived using the fourth order moment approximation. The interaction energies between the atoms in metals are estimated by using the effective pair potentials. The activation energy Q and pre-exponential factor D_0 of the self-diffusion coefficient are given in closed forms. The activation energy Q and pre-exponential D_0 values are calculated for Fe, Ag, Ta, and W metals at high temperature region near the melting temperature as well as at low (liquid Helium) temperatures, and they are shown to be in good agreement with the experimental results.
- 社団法人日本物理学会の論文
- 2000-08-15
著者
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Hung Vu
Hanoi National Pedagogic University
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Masuda-jindo Kinichi
Department Of Material Science And Engineering Tokyo Institute Of Technology
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Tich Hoang
Hanoi National Pedagogic University
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Masuda‐jindo K
Department Of Materials Science And Engineering Tokyo Institute Of Technology
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Masuda-Jinbo Kinichi
Department of Materials Science and Engineering, Tokyo Institute of Technology
関連論文
- Investigation of the Thermodynamic Properties of Anharmonic Crystals with Defects by the Moment Method
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- 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
- Investigation of the Melting Temperature of Metal at Various Pressures
- Tight-Binding Theory in the Computational Materials Science