DOI: 10.1126/science.1148336. One-Dimensional Fast Migration of Vacancy Clusters in Metals

One-Dimensional Fast Migration of Vacancy Clusters in Metals

10.1126/science.1148336

Crossref journal-article

American Association for the Advancement of Science (AAAS)

Science (221)

Abstract

The migration of point defects, for example, crystal lattice vacancies and self-interstitial atoms (SIAs), typically occurs through three-dimensional random walk in crystalline solids. However, when vacancies and SIAs agglomerate to form planar clusters, the migration mode may change. We observed nanometer-sized clusters of vacancies exhibiting one-dimensional (1D) fast migration. The 1D migration transported a vacancy cluster containing several hundred vacancies with a mobility higher than that of a single vacancy random walk and a mobility comparable to a single SIA random walk. Moreover, we found that the 1D migration may be a key physical mechanism for self-organization of nanometer-sized sessile vacancy cluster (stacking fault tetrahedron) arrays. Harnessing this 1D migration mode may enable new control of defect microstructures such as effective defect removal and introduction of ordered nanostructures in materials, including semiconductors.

Bibliography

Matsukawa, Y., & Zinkle, S. J. (2007). One-Dimensional Fast Migration of Vacancy Clusters in Metals. Science, 318(5852), 959â962.

Authors 2

Yoshitaka Matsukawa (first)
Steven J. Zinkle (additional)

References 30 Referenced 180

B. N. Singh, in Encyclopedia of Materials: Science and Technology, K. H. J. Buschow et al., Eds. (Elsevier, New York, 2001), pp. 7957–7972. / Encyclopedia of Materials: Science and Technology (2001)
10.1016/S0168-583X(01)00400-1
10.1080/01418619208201583
10.1080/0141861021000016793
10.1103/PhysRevB.65.144102
10.1016/S0022-3115(99)00174-9
10.1016/S0022-3115(99)00166-X
10.1080/14786430310001599388
10.1016/0022-3115(93)90124-H
10.1103/PhysRev.79.723
10.1103/PhysRevLett.96.125506
10.1016/S0022-3115(97)00278-X
10.1016/S0022-3115(02)01105-4
10.1016/j.jnucmat.2003.08.006
10.1103/PhysRevB.72.054105
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.
10.1080/095008399177345
J. P. Hirth J. Lothe Theory of Dislocations (McGraw-Hill New York ed. 2 1982). (10.1115/1.3167075)
10.1080/095008399176616
10.1080/01418618908229782
N. M. Ghoniem, D. Walgraef, S. J. Zinkle, J. Computer-Aided Mater. Des.8, 1 (2002). / J. Computer-Aided Mater. Des. (2002)
10.1016/0304-3991(91)90214-Q
10.1007/BF00331511
10.1016/0001-6160(65)90203-8
10.1103/PhysRev.107.1493
10.1143/JPSJ.40.1035
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.
The loop shape (triangle or circular) is unidentifiable in the edge-on view.
10.1080/00337577008235027
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.

Dates

Type	When
Created	17 years, 9 months ago (Nov. 8, 2007, 7:46 p.m.)
Deposited	1 year, 7 months ago (Jan. 10, 2024, 3:23 a.m.)
Indexed	2 weeks ago (Aug. 23, 2025, 1:03 a.m.)
Issued	17 years, 9 months ago (Nov. 9, 2007)
Published	17 years, 9 months ago (Nov. 9, 2007)
Published Print	17 years, 9 months ago (Nov. 9, 2007)

Funders 0

None

BibTeX

@article{Matsukawa_2007, title={One-Dimensional Fast Migration of Vacancy Clusters in Metals}, volume={318}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.1148336}, DOI={10.1126/science.1148336}, number={5852}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Matsukawa, Yoshitaka and Zinkle, Steven J.}, year={2007}, month=nov, pages={959–962} }

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