NEW DATA ON THE STRUCTURE OF DIAMOND SINGLE CRYSTALS WITH A HIGH CONCENTRATION OF NITROGEN CENTERS

NEW DATA ON THE STRUCTURE OF DIAMOND SINGLE CRYSTALS WITH A HIGH CONCENTRATION OF NITROGEN CENTERS Full article

Journal

Journal of Structural Chemistry
ISSN: 1573-8779 , E-ISSN: 0022-4766

Output data

Year: 2023, Volume: 64, Number: 11, Pages: 2178-2186 Pages count : 9 DOI: 10.1134/S002247662311015X

Tags

diamond, single crystal X-ray diffraction, refinement of unit cell parameters, nitrogen centers in the diamond, IR spectroscopy

Authors

Громилов С.А. ¹ , Елисеев А.П. ^2,3

Affiliations

1	Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2	Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences
3	Novosibirsk State University, Novosibirsk, Russia

Natural diamonds with a high concentration of nitrogen centers (Kumdykul deposit, North Kazakhstan) are studied. According to the IR spectroscopic data, the concentration of nitrogen C- and A-centers is several hundred ppm at a total concentration above 1000 ppm. At 532 nm excitation the low-temperature photoluminescence (PL) spectra demonstrate dominant luminescence in the 638 nm system, which is caused by negatively charged nitrogen-vacancy (NV–) pairs. The latter is a consequence of a high concentration of donor nitrogen atoms. One electron is transferred from a donor nitrogen atom to the NV pair. Broad bands with maxima at 530 nm and 590 nm correspond to H3 and 575 nm systems: NVN and NV0 complexes. Strong broadening of the diamond Raman line up to 6.5 cm–1 is observed along with the broadening of 503.2 nm, 575.0 nm, and 638.0 nm zero-phonon lines in the PL spectra up to their complete disappearance. This is explained by a high concentration of NVN(H3), NV0, and NV– centers, respectively, as well as structural defects. The unit cell parameters of single crystals are refined by the original procedure. The obtained value of 3.5675(1) Å corresponds (within the measurement error) to the maximum value known for these diamonds.

Громилов С.А. , Елисеев А.П.
NEW DATA ON THE STRUCTURE OF DIAMOND SINGLE CRYSTALS WITH A HIGH CONCENTRATION OF NITROGEN CENTERS
Journal of Structural Chemistry. 2023. Т.64. №11. С.2178-2186. DOI: 10.1134/S002247662311015X WOS Scopus РИНЦ OpenAlex

Громилов С.А. , Елисеев А.П.
Новые данные о строении монокристаллов алмаза c высокой концентрацией азотных центров
Журнал структурной химии. 2023. Т.2023. №11. 118595 :1-9. DOI: 10.26902/JSC_id118595 РИНЦ OpenAlex

Published print:

Nov 29, 2023

Web of science:	WOS:001110710500020
Scopus:	2-s2.0-85178227271
Elibrary:	65398350
OpenAlex:	W4389140094

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