Get access

EPR study of the hydrogen center in HPHT diamonds grown in carbonate medium

Authors

  • Andrey Komarovskikh,

    Corresponding author
    1. Nikolaev Institute of Inorganic Chemistry SB RAS, Acad. Lavrentiev Ave. 3, Novosibirsk, Russia
    • Corresponding author: e-mail komarrr@ngs.ru, Phone: +73 833 309 515, Fax: +73 833 309 489

      e-mail spectr@niic.nsc.ru, Phone: +73 833 309 515, Fax: +73 833 309 489

    Search for more papers by this author
  • Vladimir Nadolinny,

    Corresponding author
    1. Nikolaev Institute of Inorganic Chemistry SB RAS, Acad. Lavrentiev Ave. 3, Novosibirsk, Russia
    • Corresponding author: e-mail komarrr@ngs.ru, Phone: +73 833 309 515, Fax: +73 833 309 489

      e-mail spectr@niic.nsc.ru, Phone: +73 833 309 515, Fax: +73 833 309 489

    Search for more papers by this author
  • Yuri Palyanov,

    1. Sobolev Institute of Geology and Mineralogy SB RAS, Acad. Koptyuga Ave. 3, Novosibirsk, Russia
    2. Novosibirsk State University, Pirogova str. 2, Novosibirsk, Russia
    Search for more papers by this author
  • Igor Kupriyanov,

    1. Sobolev Institute of Geology and Mineralogy SB RAS, Acad. Koptyuga Ave. 3, Novosibirsk, Russia
    2. Novosibirsk State University, Pirogova str. 2, Novosibirsk, Russia
    Search for more papers by this author
  • Alexander Sokol

    1. Sobolev Institute of Geology and Mineralogy SB RAS, Acad. Koptyuga Ave. 3, Novosibirsk, Russia
    2. Novosibirsk State University, Pirogova str. 2, Novosibirsk, Russia
    Search for more papers by this author

Abstract

An electron paramagnetic resonance (EPR) study of synthetic diamond crystals grown at HTHP conditions in the carbonate medium Na2CO3[BOND]CO2[BOND]H2O[BOND]C 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 C[BOND]H vibrations in the IR spectra in the range of 3000 cm−1.

Ancillary