Abstract

The growth kinetics of structurally perfect single crystal in the Fe-Co -C solvents with additions of Ti (1.81–5.35 at %) and Zr (0.64–6.30 at %) has been studied in the temperature range from 1380 to 1680°C at a pressure of 5.5–6.1 GPa. Concentration limits of the formation of diamond single crystals of types Ib, IIa, and an intermediate type Ib + IIb have been established. Defect-and-impurity state, habit, and special features of capturing solvent inclusions by the growing single crystals have been studied. Boundaries of the regions of variations of the habit, the degree of structure perfection, and capture of inclusions as a function of pressure and temperature have been defined in the p,T diagram of carbon.

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