Obstacles for one-dimensional migration of interstitial clusters in iron

Y. Satoh, H. Matsui

研究成果: Article査読

24 被引用数 (Scopus)

抄録

Interstitial clusters are known to cause frequent one-dimensional (1D) jumps (stepwise positional changes) under electron irradiation around room temperature. The distance of 1D jumps in iron was examined in detail through in-situ observation using high-voltage electron microscopy. The 1D jump distance was found to be longer for smaller clusters in specimens of higher purity, although the distance did not depend on the irradiation beam intensity and electron energy. The distribution of the 1D jump distance was well described by the distribution of the free path of interstitial clusters migrating through randomly distributed impurity atoms. The 1D jump process is considered as fast 1D diffusion of interstitial clusters at low activation energy from the point where the cluster detrapped from an impurity atom to the point where the cluster was trapped again by another impurity. Electron irradiation provides a trigger for causing 1D migration by detrapping of clusters from impurity atoms.

本文言語English
ページ(範囲)1489-1504
ページ数16
ジャーナルPhilosophical Magazine
89
18
DOI
出版ステータスPublished - 2009 6月
外部発表はい

ASJC Scopus subject areas

  • 凝縮系物理学

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