Possible stacking-fault structures in the basal planes were investigated on the basis of observations of extended dislocation nodes in the β phase. It was found that the stacking fault structure was locally analogous to the α-phase. A phase transformation from α to β or from β to α could also be achieved by the cooperative shear of partial dislocations with a 1/3<11▪0> Burgers vector.

Stacking Faults and Phase Transformations in Silicon Nitride. X.Milhet, J.L.Demenet, J.Rabier: European Physics Journal, 1998, 4[2], 149-56