High-density dislocations (about 5 x 108/cm2) in diamond crystallites synthesized by a chemical vapour deposition method were studied by electron microscopy. Most of the dislocations, having a Burgers vector of ½<110>, were seen to be undissociated by weak-beam observations and were often zig-zag in shape on a climb-plane. Some dislocations lying on {111} glide planes were dissociated into Shockley partials. The stacking fault energy estimated from the separation of the partials was 290mJ/m2, which was substantially the same as that reported for natural diamond. In some crystallites, high-density twins were observed instead of dislocations.

Electron Microscopy Studies of Dislocations in Diamond Synthesized by a CVD Method. K.Suzuki, M.Ichihara, S.Takeuchi, N.Ohtake, M.Yoshikawa, K.Hirabayashi, N.Kurihara: Philosophical Magazine A, 1992, 65[3], 657-64