Abstract
Lattice defects in gadolinium gallium garnet single crystals grown by the Czochralski technique were investigated by means of X-ray topography, under the condition where μ 0·t = 0.35, being different from the normal case. Dislocations, striations, and inclusions were observed and their characteristics were determined. These dislocations originated from seeding process. Some of their Burgers vectors were laid parallel to the (111) growth direction and the others parallel to a (100) direction. This information was useful for the growth of a dislocation free single crystal. It was also found that the inclusions had homogeneous strain fields arround the nuclei.
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