Shrinking stacking fault through glide of the Shockley partial dislocation in hard-sphere crystal under gravity

Details Shrinking stacking fault through glide of the Shockley partial dislocation in hard-sphere crystal under gravity Shrinking stacking fault through glide of the Shockley partial dislocation in hard-sphere crystal under gravity

2006-06-26

arxiv.org/abs/cond-mat/0606657v6

Molecular Physics 105, 1377-1383 (2007)

Physics

Condensed Matter

Soft Condensed Matter

7 pages, 4 figures; Molecular Physics, in press

Scientific paper

10.1080/00268970701348725

Disappearance of a stacking fault in the hard-sphere crystal under gravity, such as reported by Zhu et al. [Nature 387 (1997) 883], 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 [Mori et al. J. Chem. Phys. 124 (2006) 174507]. 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.

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