期刊
PHYSICA B-CONDENSED MATTER
卷 452, 期 -, 页码 58-65出版社
ELSEVIER
DOI: 10.1016/j.physb.2014.07.012
关键词
Colloidal crystals; Colloidal epitaxy; Sedimentation; Hard spheres; Defect structures; Monte Carlo simulations
资金
- Grants-in-Aid for Scientific Research [26390054] Funding Source: KAKEN
In this paper, we have successfully identified the triangular-shaped defect structures with stacking fault tetrahedra. These structure often appeared in hard-sphere (HS) crystals grown on a square pattern under gravity. We have, so far, performed Monte Carlo simulations of the HS crystals under gravity. Single stacking faults as observed previously in the HS crystals grown on a flat wall were not seen in the case of square template. Instead, defect structures with triangular appearance in xz- and yz- projections were appreciable. We have identified them by looking layer by layer. Those structures are surrounded by stacking faults along face-centered cubic (fcc) {111}. Also, we see isolated vacancies and vacancy-interstitial pairs, and we have found octahedral structures surrounded by stacking faults along fcc (C) 2014 Elsevier B.V. All rights reserved.
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