METHOD OF PRODUCING DIAMOND STRUCTURE WITH NITROGEN-VACANCY DEFECTS Russian patent published in 2012 - IPC C01B31/06 C30B29/04 C30B33/04 B82B1/00 B82Y40/00 

FIELD: chemistry.

SUBSTANCE: invention can be used in magnetometry, quantum optics, biomedicine and information technology. Cleaned detonation nanodiamonds are sintered in a chamber at pressure 5-7 GPa and temperature 750-1200°C for a period time ranging from several seconds to several minutes. The obtained powder of diamond aggregates is exposed to laser radiation with wavelength smaller than 637 nm and diamond aggregates with high concentration of nitrogen-vacancy (NV) defects are selected based on the bright characteristic luminescence in the red spectral region. In the obtained diamond structure, about 1% of carbon atoms are substituted with NV defects and about 1% of carbon atoms are substituted with single nitrogen donors.

EFFECT: aligned blocks of nanodiamonds obtained using the invention have quasi-crystalline properties, which makes investigation and identification thereof easier; the aggregates can also be ground to obtain diamond nanocrystals having NV defects.

2 cl, 5 dwg