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EPR study of the hydrogen center in HPHT diamonds grown in carbonate medium
Author(s) -
Komarovskikh Andrey,
Nadolinny Vladimir,
Palyanov Yuri,
Kupriyanov Igor,
Sokol Alexander
Publication year - 2014
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201431163
Subject(s) - electron paramagnetic resonance , hydrogen , hydrogen atom , diamond , center (category theory) , spectral line , vacancy defect , carbonate , oxygen , materials science , atom (system on chip) , chemistry , crystallography , analytical chemistry (journal) , nuclear magnetic resonance , physics , metallurgy , group (periodic table) , chromatography , computer science , embedded system , organic chemistry , astronomy
An electron paramagnetic resonance (EPR) study of synthetic diamond crystals grown at HTHP conditions in the carbonate medium Na 2 CO 3 CO 2 H 2 OC has revealed a hydrogen‐containing center (VOH) along with centers OX1, OX2, and OX3 tentatively associated with oxygen. In the X‐band EPR spectra, the forbidden transitions of the center are superimposed on the allowed HFS lines of one hydrogen atom. We have succeeded in analysis of the allowed transitions in Q‐band experiments. On the basis of the obtained experimental data a hypothetical model of the center has been proposed as a vacancy–oxygen complex with incorporated hydrogen atom. The occurrence of hydrogen in the studied diamond crystals is supported by the presence of CH vibrations in the IR spectra in the range of 3000 cm −1 .