Abstract
AS part of a programme to investigate applications of the polarizing microscope to metallography, a study has been made using bismuth single crystals. The single crystals were prepared from material of a purity not less than 99.99 per cent bismuth, by controlled solidification from a capillary tube. As a check on purity, X-ray measurement of the unit cell dimensions gave values of a = 4.5366 kX., c = 11.8402 kX., indexed on a hexagonal basis. Sections of the various crystals were machined flat and electropolished1. The orientation of each crystal was determined using the polarizing microscope, a few of the orientations being checked by X-ray back reflexion2.
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References
Hare, G. A., and Mallon, H. D., Metallurgia (in the press).
Mallon, H. D., and Wilson, C. G., Brit. J. App. Phys. (in the press).
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MALLON, H., RUNCIMAN, I. Optical Properties of Bismuth. Nature 186, 709–710 (1960). https://doi.org/10.1038/186709a0
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DOI: https://doi.org/10.1038/186709a0
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