Local Strain Distribution in Synthetic Diamond Crystals, Determined by the Parameters of the Energy Spectrum of the Kikuchi Patterns

The average strain in local regions of synthetic diamond was determined using the energy Fourier-transform spectrum in the analysis of digital Kikuchi patterns. The degree of broadening of the diffraction bands and their intersections in the images caused by deformations is quantitatively described through the average spatial period and the area of the radial distribution of the energy spectrum. The planar distribution of local strains made it possible to determine their anisotropy in the crystal in magnitude and direction.