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Title
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Defect induced thickness growth in silver chloride (111) tabular crystals: a TEM study.
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Author
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Abstract
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| Defects in AgG tabular crystals with {111} surfaces are characterised by transmission electron microscopy (TEM) and their influence on the growth process is discussed. In the tabular crystals, twins parallel to the tabular face as well as dislocations along different directions are observed. The twins induce the tabular growth, while the dislocations do not influence the morphology. In 10 to 30% of the crystals that have been characterised, thickness growth is observed and it is shown that in all cases twins on other planes than the tabular ones are present. Two configurations occur more frequently and are analysed in detail. For the first group, twins parallel to the tabular face as well as a microtwin along a non-parallel {111} plane and ending inside the crystal are present. In the crystals of the second group only one extra non-parallel twin occurs giving rise to a bicrystal built up by a tetrahedral shaped part and a flat triangular or trapezoidal part. More complex twin configurations give rise to various, less characteristic morphologies. |
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Language
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English
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Source (book)
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International Symposium on Silver Halide Imaging, Sep. 11-14, 2000, St. Adele, Canada
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Publication
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Springfield
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Soc imaging science & technology
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2000
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ISBN
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0-89208-229-1
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Volume/pages
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p. 38-43
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ISI
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000183315900012
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