Cuprous oxide, single crystals

Possibly, the competition between the diffusion mechanism and the aggregation mechanism occurred in this case, i.e., at high dose rate, the aggregation mechanism overwhelms the diffusion mechanism, so cuprous oxide forms mainly polycrystals in contrast, when the dose rate becomes lower, the cuprous oxide single crystals are formed. 

Because of the importance of cuprous oxide and cuprous-based systems in catalysis, the most common shape of the microcrystals of CU2O, as determined experimentally and theoretically, is reported in Fig. 1. Several investigations of Cu20 single crystals have been reported, and these are particularly valuable for purposes of this review. 

Fig. 25. Adsorption of nitrogen on single crystal cubic copper and cuprous oxide. [After Rhodin, J. Am. Chem. Soc. 72, 4343 (1950).]...

Pig. 3. A stereographic plot of cuprous oxide orientation regions on a copper single crystal. 1. Regions cross-hatched with vertical and horizontal lines Oxide completely parallel to metal. One orientation. 2. dear regions Anti-parallel orientation, (Ili)Cu20//(lll)... 

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