Atomic jumps in surface self-diffusion: W on W(110)

Sang Mun Oh, Kentaro Kyuno, Seong Jin Koh, Gert Ehrlich

研究成果: Article

11 引用 (Scopus)

抜粋

Although surface diffusion has been studied on the atomic level for decades, little is known about jump processes in self-diffusion. The diffusion of W atoms on the densely packed W(110) plane has therefore been examined, using the field ion microscope to probe contributions of jumps other than between nearest-neighbor sites. Measurements of the mean-square displacements of atoms along the x and y axes (〈001〉 and 〈110〉, respectively) and of the detailed spatial distribution of atomic displacements serve to define the nature of the jumps important in diffusion. It is shown that, in addition to nearest-neighbor and second-nearest-neighbor transitions along the close-packed 〈111〉, atoms also carry out jumps along 〈001〉 and 〈110〉, and that the contribution from these processes increases rapidly with temperature.

元の言語English
記事番号233406
ページ(範囲)2334061-2334064
ページ数4
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
66
発行部数23
出版物ステータスPublished - 2002 12 15
外部発表Yes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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  • これを引用

    Oh, S. M., Kyuno, K., Koh, S. J., & Ehrlich, G. (2002). Atomic jumps in surface self-diffusion: W on W(110). Physical Review B - Condensed Matter and Materials Physics, 66(23), 2334061-2334064. [233406].