Change of dislocations density in single crystals of various types diamonds depending on the growth temperature and rate

• Дата: 2016
• Автори: Suprun, O.M., Il'nitskaya, G.D., Kalenchuk, V.A., Zanevskii, O.A., Shevchuk, S.N., Lysakovskii, V.V.
• Формат: Стаття
• Мова: English
• Опубліковано: НТК «Інститут монокристалів» НАН України 2016
• Назва видання: Functional Materials
• Теми: Characterization and properties
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/121503
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Change of dislocations density in single crystals of various types diamonds depending on the growth temperature and rate / O.M. Suprun, G.D. Il'nitskaya, V.A. Kalenchuk, O.A. Zanevskii, S.N. Shevchuk, V.V. Lysakovskii // Functional Materials. — 2016. — Т. 23, № 4. — С. 552-556. — Бібліогр.: 20 назв. — англ.

Single crystals of various types of diamonds have been grown by the melt solution crystallization at high pressures and temperatures. To define the emergences of dislocations onto the {100} and {111} faces, the selective etching of the crystals in KOH and KNO₃ melt has been used. It has been defined that the dislocation density, Nd, in diamond single crystals grown at a low growth rate of 1-2 mg/h at T = 1420-1500°C is 0.8-3·102 cm⁻² and the dislocation densities, Nd, in single crystals grown at temperatures 1280-1450°C and 1280-1350°C at growth rates of 3-5 mg/h and 20-25 mg/h are 1.1-2.2·103 and 1.06-1.35·106 cm⁻², respectively.