A method was presented for estimating the stacking-fault energies in alkali halide crystals by using creep data. Using this procedure, the stacking-fault energy was estimated to be 390mJ/m2; in good agreement with theoretical predictions of dissociation on {110} planes.

Method of Estimating Stacking-Fault Energies in Alkali Halide Crystals using Creep Data. F.A.Mohamed, T.G.Langdon: Journal of Applied Physics, 1974, 45[5], 1965-7