Crystal structure, thin films bridged structures

Bulk silicon carbide has the zincblende crystal structure and has been studied, not in single crystal form, but as a micron depth thin film created by chemical vapor deposition on a Si(100) substrate (Powers et al., 1992). I vo C-terminated c(2x2) structures have been studied by LEED, one with, and one without exposure, to C2II4 following cleaning. In both cases, the surface is terminated with coplanar C-C dimers which bridge the second layer Si sites. The Si rich surface terminates with an asymmetric Si dimer (Powers ct al., 1992). 

Fig. 2.4. Microphotographs of sintered ZnO films with different structures a - structure consists of microcrystals connecting each other by thin crystal bridges b - lace structure is characterized by variety of branch thickness. Magnification 2 1(H.

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