Abstract

Transverse inhomogeneities in impurity distribution have been observed in germanium single crystals grown from the melt by the Czochralski method. This phenomenon has been observed both in unrotated and rotated crystals. Unlike the impurity cores related to the presence of flat {111} facets at the crystal growth interface, it is not related to the crystallographic properties of germanium. The cause of this effect has been sought in the thermally-induced and rotation-induced convection movements of the melt.

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