Interplay between elastic fields due to gravity and a partial dislocation for a hard-sphere crystal coherently grown under gravity: driving force for defect disappearance

DOI DOI Web Site 被引用文献5件 オープンアクセス
  • Atsushi Mori
    a Department of Advanced Materials , Institute of Technology and Science, The University of Tokushima , 2-1 Minamijosanjima, Tokushima, 770-8506, Japan
  • Yoshihisa Suzuki
    b Department of Life System , Institute of Technology of Science, The University of Tokushima , 2-1 Minamijosanjima, Tokushima 770-8506, Japan

書誌事項

公開日
2010-07-10
DOI
  • 10.1080/00268976.2010.489523
  • 10.48550/arxiv.1004.4409
公開者
Informa UK Limited

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説明

We previously observed that an intrinsic staking fault shrunk through a glide of a Shockley partial dislocation terminating its lower end in a hard-sphere crystal under gravity coherently grown in <001> by Monte Carlo simulations [Mori et al., Molec. Phys. 105, 1377 (2007)]; it was an answer to a one-decade long standing question why the stacking disorder in colloidal crystals reduced under gravity [Zhu et al., Nature 387, 883 (1997)]. Here, we present an elastic energy calculation; in addition to the self-energy of the partial dislocation [Mori et al., Prog. Theor. Phys. Suppl. 178, 33 (2009)] we calculate the cross-coupling term between elastic field due to gravity and that due to a Shockley partial dislocation. The cross term is a increasing function of the linear dimension R over which the elastic field expands, showing that a driving force arises for the partial dislocation moving toward the upper boundary of a grain.

8pages, 4figures, to be published in Molecular Physics

収録刊行物

  • Molecular Physics

    Molecular Physics 108 (13), 1731-1738, 2010-07-10

    Informa UK Limited

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