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Journal of Metallurgy
Volume 2012 (2012), Article ID 517230, 6 pages
doi:10.1155/2012/517230
Study of Tracer Diffusion Mechanism in Amorphous Metal
1Department of Physics, Thai Nguyen University of Education, Luong Ngoc Quyen, Thai Nguyen, Vietnam
2Faculty of General Science, Ho Chi Minh City University of Food Industry, 140 Le Trong Tan, Ho Chi Minh, Vietnam
3Department of Computational Physics, Ha Noi University of Science and Technology, 1 Dai Co Viet, Ha Noi, Vietnam
Received 11 March 2012; Revised 27 May 2012; Accepted 12 June 2012
Academic Editor: E. Mittemeijer
Copyright © 2012 P. H. Kien et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
The statistical relaxation (SR) simulation has been conducted to study the behavior of simplexes and bubbles (BB) in amorphous Co metal containing atoms. The simulation reveals that the fraction of 4-simplex increases and -simplex decreases depending upon relaxation degree. The simulation found that a large number of BB vary upon relaxation degree, which could play a role of diffusion vehicle for Co atoms in amorphous matrix. The idea of the diffusion mechanism in amorphous metal is described as follows: the elemental atomic movement includes a jump of neighboring atom into the BB and then a collective displacement of a large number of atoms around BB.