Figure 7
(a) Electron diffraction pattern recorded along the [001] = [0001] zone axis and superimposed on the corresponding bright field TEM image of a lead dioxide particle. The triplets (a, b, c) and (a*, b* and c*) are, for the hexagonal unit cell, the direct and reciprocal basis vectors, respectively. (b) Focus on one of the kinks shown at the top of Fig. 7(a). The characteristics of this kink are its terrace and its front . |