Orientation dependent surface stabilization on flame deposited diamond single crystals

摘要: In this study a model for the orientation dependent surface stabilization of diamond grown from vapour phase is presented. The based on first order broken bond analysis crystal with additional considerations about reconstruction by dimer formation. Due to formation dimers, expected orientations corresponding Miller indices {hhk} h < k in (110) zones. It demonstrated that gives good description growth phenomena like facets, curved bands and microfaceting, observed homoepitaxially samples. These specimens are obtained flame deposition cylindrical type IIa natural substrates {111}, {110} or {001} top faces. conformation surfaces {hhk}h between {111} {113} appear be stabilized one direction, while discrete number subject two-dimensional stabilization. All other development microfacets which also have close <_ k, as was determined laser reflectometry. addition it shown differences incorporation nitrogen nitrogen-vacancy pairs lattice consistent described model. For purpose single crystalline layer hemispherical substrate technique investigated cathodoluminescence topography.