Paramagnetic centers in detonation nanodiamonds studied by CW and pulse EPRShow others and affiliations
2010 (English)In: Chemical Physics Letters, ISSN 0009-2614, E-ISSN 1873-4448, Vol. 493, no 04-Jun, p. 319-322Article in journal (Refereed) Published
Abstract [en]
Dispersed detonation nanodiamonds have been studied by continuous-wave (CW) and pulse EPR techniques. The spectrum of bulk radicals (g = 2.0025 +/- 0.0002, a Lorentz line shape with Delta H-pp = 0.95 +/- 0.05 mT) dominated in CW EPR and prevented to record spectra from other paramagnetic species. The pulse EPR-spectrum was the superposition of the distorted P1-center spectrum with parameters (g = 2.0025, A(xx) = 2.57 mT, A(yy) = 3.08 mT, A(zz) = 4.07 mT), the H1-center spectrum (g = 2.0028) and the single line (g = 2.0025, DHpp = 0.40 +/- 0.05 mT) from other centers which may be assigned to surface radicals. The concentration of P1-centers has been estimated by CW EPR as 2 +/- 1 ppm N.
Place, publisher, year, edition, pages
Elsevier Science B.V., Amsterdam. , 2010. Vol. 493, no 04-Jun, p. 319-322
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-58379DOI: 10.1016/j.cplett.2010.05.050ISI: 000278650000026OAI: oai:DiVA.org:liu-58379DiVA, id: diva2:343306
Note
Original Publication:
A.V. Fionov, Anders Lund, Weimin Chen, N.N. Rozhkova, Irina Buyanova, G.I. Emelyanova, L.E. Gorlenko, E.V. Golubina, E.S. Lokteva, E. Osawa and V.V. Lunin, Paramagnetic centers in detonation nanodiamonds studied by CW and pulse EPR, 2010, Chemical Physics Letters, (493), 04-Jun, 319-322.
http://dx.doi.org/10.1016/j.cplett.2010.05.050
Copyright: Elsevier Science B.V., Amsterdam.
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2010-08-132010-08-112017-12-12