Spectroscopy of condensed matter

Hydrogen defects in diamonds: research and definition of content of N$_3$VH content using secondary ion mass spectrometry and infrared spectroscopy

S. N. Shilobreeva^a, R. A. Khmelnitskii^b, B. Ya. Ber^c, D. Yu. Kazantsev^c, V. A. Dravin^b, V. Yu. Prokof'ev^d, S. A. Tarelkin^e, M. V. Tokarev<sup>c

a</sup> Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, Moscow
^b P. N. Lebedev Physical Institute, Russian Academy of Sciences, Moscow
^c Ioffe Institute, St. Petersburg
^d Institute of Geology of Ore Deposits, Petrography, Mineralogy and Biochemistry RAS, Moscow
^e Technological Institute for Superhard and Novel Carbon Materials, Troitsk, Moscow

Abstract: The concentration of hydrogen and N$_3$VH defects in natural diamonds was determined using secondary ion mass spectrometry (SIMS) and infrared (IR) spectroscopy. A method for quantitative analysis of hydrogen was proposed based on the creation of reference samples directly in the studied samples by direct implantation of hydrogen. A linear correlation was established between the IR absorption of the paintwork material at 3107 cm$^{-1}$ and the hydrogen concentration determined by SIMS: $C_H=S^*_{\mathrm{N_3VH}}\times I_{3107}$, где $S^*_{\mathrm{N_3VH}}$ = (2,15 $\pm$ 1,44) $\times$10$^{17}$ cm$^{-1}$. A detailed characteristics of all possible hydrogen defects in diamonds is given.

Keywords: secondary ion mass spectrometry, IR spectroscopy, diamond, hydrogen, N$_3$VH defects.

Received: 27.01.2025
Revised: 30.04.2025
Accepted: 04.06.2025

DOI: 10.61011/OS.2025.06.60914.7571-25

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