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査読

11 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号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
23
出版ステータスPublished - 2002 12月 15
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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