Abstract
IN recent years growth spirals have been observed on crystals of nearly thirty1 substances. Detailed descriptions of these markings, as well as their relationship to screw dislocations, have been given especially of crystals of silicon carbide1,2 and cadmium iodide3. I wish to report the occurrence of growth spirals on crystals of cadmium bromide (CdBr2), and to comment on their implications regarding possible structural polytypism in this compound.
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References
Dekeyser, W., and Amelinckx, S., “Les Dislocations et la Croissance des Cristaux”, first edit. (Paris, 1955).
Verma, A. R., “Crystal Growth and Dislocations”, first edit. (London, 1953).
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Pinsker, Z. G., “Electron Diffraction”, English translation (London, 1953).
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MITCHELL, R. Cadmium Bromide: Growth Spirals and Possible Polytypism. Nature 182, 337–338 (1958). https://doi.org/10.1038/182337a0
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DOI: https://doi.org/10.1038/182337a0
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