On the occurrence of ?113?; facets on CVD-grown diamond

Relatively thick films of diamond were deposited homoepitaxially on cylindrical substrates from an acetylene-oxygen combustion flame. On these single crystals a number of stable F faces are present. For the first time stable facets other than {111}; and {100}; are observed, namely {113}; facets. These facets occur under conditions of low surface coverage, e.g. at high deposition temperatures. This confirms the prediction of a previously developed crystal growth model. A preliminary investigation of the relative stability of the {113}; faces as function of the deposition temperature is described.