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Volume: 42 | Article ID: art00002
Anisotropic Growth and Screw Dislocation of {100} Tabular Grains
  DOI :  10.2352/J.ImagingSci.Technol.1998.42.6.art00002  Published OnlineNovember 1998

Silver chloride tabular grains with {100} faces on the surface (hereinafter referred as {100} tabular grain) were prepared by introducing a small amount of silver bromide at their nucleation stage. Their dislocation structure was observed by low-temperature transmission electron microscopy (LTEM) in order to study the mechanism of their anisotropic growth. The results of the observations were as follows: First, a nucleus was observed at one of the corners of almost every {100} tabular grain. Second, two dislocations extended from a nucleus trace in the <310> directions. Third, a {100} tabular grain grew anisotropically from the nucleus only in the two directions to which these two dislocations extended. Fourth, the dislocations thus observed in {100} tabular grains were identified as screw dislocations. We conclude that anisotropic growth of {100} tabular grains is caused by screw dislocations.

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Takayoshi Oyamada, Takekimi Shiozawa, Seiji Yamashita, "Anisotropic Growth and Screw Dislocation of {100} Tabular Grainsin Journal of Imaging Science and Technology,  1998,  pp 483 - 486,

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Copyright © Society for Imaging Science and Technology 1998
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