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Please use this identifier to cite or link to this item: http://elib.bsu.by/handle/123456789/233220
Title: Comparison of HPHT and LPHT annealing of Ib synthetic diamond
Authors: Kazuchits, N. M.
Rusetsky, M. S.
Kazuchits, V. N.
Korolik, O. V.
Kumar, V.
Moe, K. S.
Wang, W.
Zaitsev, A. M.
Issue Date: Nov-2018
Publisher: Elsevier
Citation: Diamond and Related Materials. – 2019. – Vol. 91. – P. 156–164.
Abstract: Defect transformations in type Ib synthetic diamond annealed at a temperature of 1870 °C under stabilizing pressure (HPHT annealing) and in hydrogen atmosphere at normal pressure (LPHT annealing) are compared. Spectroscopic data obtained on the samples before and after annealing prove that the processes of nitrogen aggregation and formation of nitrogen-nickel complexes are similar in both cases. Essential differences between HPHT and LPHT annealing are stronger graphitization at macroscopic imperfections and enhanced lattice distortions around point defects in the latter case. The lattice distortion around point defects is revealed as a considerable broadening of zero-phonon lines of "soft" (vacancy-related) optical centers. It was found that LPHT annealing may enhance overall intensity of luminescence of HPHT-grown synthetic diamonds.
URI: http://elib.bsu.by/handle/123456789/233220
ISSN: 0925-9635
Appears in Collections:Кафедра энергофизики

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