Shrinking stacking fault through glide of the Shockley partial dislocation in hard-sphere crystal under gravity |
| |
| Authors: | Atsushi Mori Yoshihisa Suzuki Shin-Ichiro Yanagiya Tsutomu Sawada Kensaku Ito |
| |
| Institution: | 1. Department of Advanced Materials , Institute of Technology and Science,The University of Tokushima , 2-1 Minamijosanjima, Tokushima 770-8506, Japan mori@opt.tokushima-u.ac.jp;3. Department of Life System , Institute of Technology and Science, The University of Tokushima , 2-1 Minamijosanjima, Tokushima 770-8506, Japan;4. Department of Advanced Materials , Institute of Technology and Science,The University of Tokushima , 2-1 Minamijosanjima, Tokushima 770-8506, Japan;5. National Institute for Materials Science , 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan;6. Department of Material Systems Engineering and Life Science , Graduate School of Science and Engineering, University of Toyama , 3190 Gofuku, Toyama 930-8555, Japan |
| |
| Abstract: | Disappearance of a stacking fault in the hard-sphere crystal under gravity, such as reported by Zhuet al. Nature 387, 883 (1997)], has successfully been demonstrated by Monte Carlo simulations. We previously found that a less ordered (or defective) crystal formed above a bottom ordered crystal under stepwise controlled gravity Moriet al. J. Chem. Phys. 124, 174507 (2006)]. A defect in the upper defective region has been identified with a stacking fault for the (001) growth. We have looked at the shrinking of a stacking fault mediated by the motion of the Shockley partial dislocation; the Shockley partial dislocation terminating the lower end of the stacking fault glides. In addition, the presence of crystal strain, which cooperates with gravity to reduce stacking faults, has been observed. |
| |
| Keywords: | |
|
|
