Single crystals grown from small droplets

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Abstract
Single crystal droplets of Au, Cu, Ag, Pb, In, Cu 3 Au, and Ge have been grown in vacuum by two simple methods. In each case graphite crucibles were employed and served as a surface for point contact so that the droplets could solidify in the absence of a containment shell, free of mechanical and thermal stresses. The crystals approximate spheres ranging from 50 to 600 microns in diameter and are thus ideally suited for x-ray diffraction studies in transmission. Although the surface tension properties of the materials were important to the successful growth characteristics, it was also observed that exclusion of foreign nuclei and elimination of mechanical and thermal stresses were equally significant.

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