Lattice defects in the wurtzite crystal were studied by means of high-resolution electron microscopy of samples which had been pulverized at room temperature. Dissociated and undissociated 60° dislocations were observed by means of high-resolution lattice imaging. The stacking-fault energy was estimated, from the separation of partials, to be equal to 220mJ/m2. The stacking fault energies in wurtzite crystals were related to the c/a ratios of the crystals.

High-Resolution Electron Microscopy of Extended Defects in Wurtzite Crystals. K.Suzuki, M.Ichihara, S.Takeuchi: Japanese Journal of Applied Physics, 1994, 33[I-2], 1114-20