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Title: Evolution of Triplet Paramagnetic Centers in Diamonds Obtained by Sintering of Detonation Nanodiamonds at High Pressure and Temperature

Abstract

The electron paramagnetic resonance (EPR) spectra of triplet centers in detonation nanodiamonds (DNDs) and diamond single crystals of submicrometer size, synthesized from those DNDs at high pressures and temperatures, are studied. In the EPR spectra of DNDs, signals from negatively charged nitrogen- vacancy centers (NV)/sup(-) with a g factor of g{sub 1} = 4.24 and multivacancies with g{sub 2} = 4.00 are observed. The signals from (NV)/sup(-) centers disappear in the spectra of diamond single crystals, and a quintet signal with g = 4.00 is detected at the position of the signal from multivacancies. Analysis of the shape and position of the quintet’ lines showed that this ESR signal is due to the pairs of nitrogen substitution centers in diamond, separated from each other by distances not exceeding 0.7 nm, between which a strong exchange interaction takes place. A comparison of the experimental data and the simulation results allows determining the spin-Hamiltonian parameters of the exchange-coupled pairs of paramagnetic impurity nitrogen atoms.

Authors:
 [1];  [2];  [3]; ;  [1];  [3];  [1]
  1. Russian Academy of Sciences, Ioffe Institute (Russian Federation)
  2. Ben-Gurion University of the Negev, Department of Physics (Israel)
  3. Russian Academy of Sciences, Kurnakov Institute of General and Inorganic Chemistry (Russian Federation)
Publication Date:
OSTI Identifier:
22771238
Resource Type:
Journal Article
Journal Name:
Physics of the Solid State
Additional Journal Information:
Journal Volume: 60; Journal Issue: 4; Other Information: Copyright (c) 2018 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7834
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; COMPARATIVE EVALUATIONS; DIAMONDS; DISTANCE; ELECTRON SPIN RESONANCE; EVOLUTION; EXCHANGE INTERACTIONS; EXPLOSIONS; HAMILTONIANS; IMPURITIES; LANDE FACTOR; MONOCRYSTALS; NANOSTRUCTURES; NITROGEN; PARAMAGNETISM; SIMULATION; SINTERING; SPECTRA; SPIN; TRIPLETS; VACANCIES

Citation Formats

Osipov, V. Yu., E-mail: osipov@mail.ioffe.ru, Shames, A. I., Efimov, N. N., Shakhov, F. M., Kidalov, S. V., Minin, V. V., and Vul’, A. Ya.. Evolution of Triplet Paramagnetic Centers in Diamonds Obtained by Sintering of Detonation Nanodiamonds at High Pressure and Temperature. United States: N. p., 2018. Web. doi:10.1134/S1063783418040236.
Osipov, V. Yu., E-mail: osipov@mail.ioffe.ru, Shames, A. I., Efimov, N. N., Shakhov, F. M., Kidalov, S. V., Minin, V. V., & Vul’, A. Ya.. Evolution of Triplet Paramagnetic Centers in Diamonds Obtained by Sintering of Detonation Nanodiamonds at High Pressure and Temperature. United States. doi:10.1134/S1063783418040236.
Osipov, V. Yu., E-mail: osipov@mail.ioffe.ru, Shames, A. I., Efimov, N. N., Shakhov, F. M., Kidalov, S. V., Minin, V. V., and Vul’, A. Ya.. Sun . "Evolution of Triplet Paramagnetic Centers in Diamonds Obtained by Sintering of Detonation Nanodiamonds at High Pressure and Temperature". United States. doi:10.1134/S1063783418040236.
@article{osti_22771238,
title = {Evolution of Triplet Paramagnetic Centers in Diamonds Obtained by Sintering of Detonation Nanodiamonds at High Pressure and Temperature},
author = {Osipov, V. Yu., E-mail: osipov@mail.ioffe.ru and Shames, A. I. and Efimov, N. N. and Shakhov, F. M. and Kidalov, S. V. and Minin, V. V. and Vul’, A. Ya.},
abstractNote = {The electron paramagnetic resonance (EPR) spectra of triplet centers in detonation nanodiamonds (DNDs) and diamond single crystals of submicrometer size, synthesized from those DNDs at high pressures and temperatures, are studied. In the EPR spectra of DNDs, signals from negatively charged nitrogen- vacancy centers (NV)/sup(-) with a g factor of g{sub 1} = 4.24 and multivacancies with g{sub 2} = 4.00 are observed. The signals from (NV)/sup(-) centers disappear in the spectra of diamond single crystals, and a quintet signal with g = 4.00 is detected at the position of the signal from multivacancies. Analysis of the shape and position of the quintet’ lines showed that this ESR signal is due to the pairs of nitrogen substitution centers in diamond, separated from each other by distances not exceeding 0.7 nm, between which a strong exchange interaction takes place. A comparison of the experimental data and the simulation results allows determining the spin-Hamiltonian parameters of the exchange-coupled pairs of paramagnetic impurity nitrogen atoms.},
doi = {10.1134/S1063783418040236},
journal = {Physics of the Solid State},
issn = {1063-7834},
number = 4,
volume = 60,
place = {United States},
year = {2018},
month = {4}
}