Abstract
This paper reports the results of the convergent beam electron diffraction study performed in several InSe crystals, grown from the melt by the Bridgman-Stockbarger method. The recorded images denote a strong stacking disorder, due to the presence of different polytypes in the same crystal. Experimental diffraction patterns show only the lowest symmetry of the structures and do not allow us to identify the various polytypes and precise calculation of the lattice parameters. However, the presence of several high order Laue zone rings has made possible the evaluation of the lattice constants, the identification of two hexagonal polytypes (the ϵ-2H and the δ-4H structures) and of two rhombohedral phases (the γ-3R and the 9R structures).
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