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Volumn 318, Issue 5852, 2007, Pages 959-962

One-dimensional fast migration of vacancy clusters in metals

Author keywords

[No Author keywords available]

Indexed keywords

CRYSTALLIN; METAL; NANOMATERIAL;

EID: 36048965124     PISSN: 00368075     EISSN: 10959203     Source Type: Journal    
DOI: 10.1126/science.1148336     Document Type: Article
Times cited : (170)

References (30)
  • 10
  • 16
    • 36048974230 scopus 로고    scopus 로고
    • The crowdions located at the loop center have a smaller energy barrier for motion than that of the crowdions located on the loop perimeter (4, This is because the most stable configuration for single SIAs is the dumbbell: The crowdions on the loop perimeter are more likely to transform to dumbbell configuration. Conversely, Marian (5) claimed that crowdion jumps are more likely to occur at the loop perimeter. This is because the interatomic potential used by Marian incorrectly predicts the crowdion configuration to be more stable than the dumbbell configuration
    • The crowdions located at the loop center have a smaller energy barrier for motion than that of the crowdions located on the loop perimeter (4). This is because the most stable configuration for single SIAs is the dumbbell: The crowdions on the loop perimeter are more likely to transform to dumbbell configuration. Conversely, Marian (5) claimed that crowdion jumps are more likely to occur at the loop perimeter. This is because the interatomic potential used by Marian incorrectly predicts the crowdion configuration to be more stable than the dumbbell configuration.
  • 27
    • 36048935338 scopus 로고    scopus 로고
    • We did not regard the loop migration of 15 nm as a ballistic jump because of the following context. The 1D migration of dislocation loop is a result of collective motion of numerous atoms whose elementary jump length is d 110, the interplanar distance between (110) planes. Although the vacancy loop migrated ballistically 15 nm within a few video frames, it seems reasonable to assume that this migration consists of several hundred jumps of a few hundred atoms in the same direction, involving thermally activated atomic jumps in the reverse direction on an atomic scale
    • 110, the interplanar distance between (110) planes. Although the vacancy loop migrated ballistically 15 nm within a few video frames, it seems reasonable to assume that this migration consists of several hundred jumps of a few hundred atoms in the same direction, involving thermally activated atomic jumps in the reverse direction on an atomic scale.
  • 28
    • 36049019981 scopus 로고    scopus 로고
    • The loop shape (triangle or circular) is unidentifiable in the edge-on view
    • The loop shape (triangle or circular) is unidentifiable in the edge-on view.
  • 30
    • 36048971390 scopus 로고    scopus 로고
    • This research was sponsored by the Office of Fusion Energy Sciences, U.S. Department of Energy. The microscope facility within the SHaRE (Shared Research Equipment User Facility) Collaborative Research Center at ORNL was supported by the Division of Scientific User Facilities, Office of Basic Energy Science. We are grateful to Y. N. Osetsky, S. I. Golubov, B. N. Singh, and P. J. Kamenski for valuable comments
    • This research was sponsored by the Office of Fusion Energy Sciences, U.S. Department of Energy. The microscope facility within the SHaRE (Shared Research Equipment User Facility) Collaborative Research Center at ORNL was supported by the Division of Scientific User Facilities, Office of Basic Energy Science. We are grateful to Y. N. Osetsky, S. I. Golubov, B. N. Singh, and P. J. Kamenski for valuable comments.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.