Large single decagonal quasicrystals which were about 0.8mm in diameter and 10mm in length were obtained by directional growth. These quasicrystals exhibited a decaprismatic morphology, and their perfection was examined by means of electron diffraction. It was found that the perfection of the single quasicrystals depended upon the growth rate during directional solidification. A high density of mixed dislocations with their Burgers vectors parallel to the 10-fold axis, and stacking faults with displacement vectors which were parallel to the 10-fold axis, were introduced into the quasicrystals during rapid directional growth.

L.F.Chen, H.Chen, F.H.Li: Philosophical Magazine Letters, 1995, 71[1], 51-7