vacancy migration 中文意思是什麼

vacancy migration 解釋
空位移動
  • vacancy : n. 1. 空虛，空；空間，空隙，空處；空地，空房（等）。2. 精神空虛，心不在焉，沒精神，出神，茫然若失。3. 空位，空額。4. 閑暇；無所事事。
  • migration : n. 1. 移住，遷移；移動；徙動。2. （鳥）移棲，遷徙；（魚）洄遊；（植物）侵移。3. 移住者群，移棲群。4. 【化、物】原子移動；電離子的移動。
  1. The diffusion mechanism wherein net atomic migration is from lattice site to an adjacent vacancy

    一種擴散機制，這時候原子的凈遷移過程是從晶格結點位置移動到鄰近的空位中。
  2. In the theoretical simulation on the behavior of single helium atom in aluminum, the varieties of energy data including the formation, migration, binding, and dissociation energies for single helium atom at the interstitial, vacancy, grain boundary, and dislocation sites in aluminum lattice were calculated, based on the density functional theories, general gradient approximation and pseudopotential plane wave method. results showed that the most fittable sites for containing helium atoms inside the cell are vacancies. but in the view of the whole lattice, grain boundaries are the best

    計算結果表明，晶內he原子擇優佔位區是空位，而在整個晶體范圍，最有利於容納he原子的區域是晶界，位錯容納he原子的能力次於晶界和空位；在fcc -鋁的間隙位中， he原子優先充填四面體間隙位；晶內間隙he原子是可動的，通過間隙he原子的運動，可在晶內聚集，或被空位、晶界、位錯等缺陷束縛。
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