A novel convergent-beam-electron-diffraction method is discussed, which permits us to determine unambiguously the polarity of {001}-oriented semiconductor compounds with sphalerite structure. It is based on a comparison between experimental patterns and simulated patterns. At variance with {110}-oriented crystals, the polarity cannot be uniquely determined from observed intensity asymmetry in the ±{200} discs. Additional features have to be considered, such as the geometry and intensity of Kikuchi lines in the transmitted disc. Examples from ZnSe crystals are given.
No takes yet. Share an insight, caveat, or question.
Lavagne et al. (2002) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: