Состав и пространственное распределение атомов примесей в монокристаллах синтетического алмаза

Abstract

Impurity composition and crystal structure perfection of the synthetic diamonds have been investigated in the present study. The diamonds were grown on high pressure apparatus like “split sphere”, using different systems of metal-dissolvents. Sectorial distribution of the impurity leads to a considerable inhomogeinty of the crystal optical characteristics and ti the appearance of additional internal strains. For crystals, grown in system Ni-Fe-C, growth sector {111} contains 2,5 times as more nitrogen and several times as more Ni than the growth sector {100}. Crystals, grown in systems, which contain nitrogen and don’t contain Ni, have higher degree of crystal perfection. For such crystals sectorial inhomogeny is not revealed, and according to their optical characteristics they are close to the most perfect natural diamonds.