Abstract
Two different structures, obtained with specific growth parameters, in Hg1−xCd x Te single crystals synthesized by the vertical Bridgman technique, are shown. A structure (small vertical line-shaped defects) located in the central part of the charge along the growth axis can be ascribed to convection induced by melt–solid interface curvature. The other structure, obtained in the first-to-freeze region of the ingot, when the temperature of the cold zone of the furnace is constant and a few degrees lower than the solidification one, can be ascribed to the convection rolls frozen in the solid matrix.
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