Phason flips which were associated with the glide of a perfect dislocation were examined by using the Burkov model for a decagonal quasi-crystal which was a pseudo-binary alloy of Al and transition metals. It was shown that the glide of a perfect dislocation was difficult, without producing chemical disorder. There were 3 extreme cases in the glide of a dislocation in a quasi-crystal. First was conservative glide at a very high temperature, where complete phason relaxation occurred. Secondly, there was glide-producing chemical disorder. Thirdly, there was glide which produced a stacking fault with the fault vector of the phason component of the Burgers vector.

Dislocation Migration and Phason Strain Relaxation in a Quasicrystal. S.Takeuchi, K.Shinoda, K.Edagawa: Philosophical Magazine A, 1999, 79[2], 317-27