Order of morphological importance

Figure 4.1. Crystal faces with the highest rank in the order of morphological importance (with the highest reticular density) for P. F. and I lattice types of the cubic system (a) P lattice, 100) (b) F lattice. Ill) (c) I lattice. (110).

Figure 6.3. Expected difference in the features of growth banding in respective growth sectors depending on the order of morphological importance (MI, > MI >Ml3).A, B, and C indicate growth sectors corresponding to respective faces and the features to be observed in growth banding. The distribution of dislocations is not indicated.

Growth banding seen in different growth sectors will have different features depending on the order of morphological importance. This is due to environmental conditions. 

Figure 6.3 illustrates schematically features seen in the growth banding patterns in respective growth sectors, in relation to the order of morphological importance of the crystal faces. A rough interface disappears as growth proceeds, but the... 

The 111 face of diamond contains three PBCs, but 100 contains a maximum of two PBCs, even if surface reconstruction takes place. Therefore, the characteristics observed in CVD diamonds cannot be accounted for in terms of surface reconstruction due to the difference in solvents. If the surface energy term can be modified for any other reason, it is possible that the order of morphological importance maybe reversed. A possible reason maybe the surface adsorption of molecules on the surface of a growing CVD diamond. It has been calculated that molecules adsorbed on the surface can drastically modify the surface energy state of diamond. 

From the surface microtopographic characteristics summarized above, it is concluded that the order of morphological importance of p5U ite is 100 > 111 > 210. This order is in agreement with the results of PBC analysis. 

Electron Microscopy. Electron microscopy is one of the most important physical methods for the characterization of finely divided solids. It allows direct viewing of the shape and morphology of particles in this order of magnitude, primary particle size, particle size distribution, and aggregation. 

In Fig. 27 experimental 1/e values are represented as a function of the temperature for samples with different compositions. As shown, the experimental values qualitatively follow Eq. 7 although 1/e achieves a non-zero value at the critical temperature. The intrinsic composite structure of semicrystalline polymers has been invoked to understand this effect [8, 6]. The order of magnitude of the constant A has been reported to be around 103 °C [11] which is consistent with the relatively high polarizability of these materials. At this point it is important to emphasize that the knowledge of morphological aspects of these copolymers might help, in future, to develop a theoretical framework capable of accounting for the experimental observations. 

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