Defects and impurities in nanodiamonds: EPR, NMR and TEM study

A. I. Shames; A. M. Panich; W. Kempiński; A. E. Alexenskii; M. V. Baidakova; A. T. Dideikin; V. Yu Osipov; V. I. Siklitski; E. Osawa; M. Ozawa; A. Ya Vul'

doi:10.1016/S0022-3697(02)00185-3

Defects and impurities in nanodiamonds: EPR, NMR and TEM study

A. I. Shames, A. M. Panich, W. Kempiński, A. E. Alexenskii, M. V. Baidakova, A. T. Dideikin, V. Yu Osipov, V. I. Siklitski, E. Osawa, M. Ozawa, A. Ya Vul'

Department of Physics

Research output: Contribution to journal › Article › peer-review

181 Scopus citations

Abstract

EPR, ¹³C NMR and TEM study of ultradisperse diamond (UDD) samples is reported. The compounds show a high concentration of paramagnetic centers (up to 10²⁰ spin/g), which are due to structural defects (dangling C-C bonds) on the diamond cluster surface. The anomalous reduction in the spin-lattice relaxation time of ¹³C (from several hours in natural diamond to ∼ 150 ms in UDD clusters) is attributed to the interaction between the unpaired electrons of the paramagnetic centers and nuclear spins. ¹³C NMR line-width reflects the fact that the structure of the UDD surface is distorted in comparison to the 'bulk' diamond structure.

Original language	English
Pages (from-to)	1993-2001
Number of pages	9
Journal	Journal of Physics and Chemistry of Solids
Volume	63
Issue number	11
DOIs	https://doi.org/10.1016/S0022-3697(02)00185-3
State	Published - 1 Nov 2002

Keywords

D. Electron paramagnetic resonance (EPR)
D. Nuclear magnetic resonance (NMR)

ASJC Scopus subject areas

General Chemistry
General Materials Science
Condensed Matter Physics

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10.1016/S0022-3697(02)00185-3

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title = "Defects and impurities in nanodiamonds: EPR, NMR and TEM study",

abstract = "EPR, 13C NMR and TEM study of ultradisperse diamond (UDD) samples is reported. The compounds show a high concentration of paramagnetic centers (up to 1020 spin/g), which are due to structural defects (dangling C-C bonds) on the diamond cluster surface. The anomalous reduction in the spin-lattice relaxation time of 13C (from several hours in natural diamond to ∼ 150 ms in UDD clusters) is attributed to the interaction between the unpaired electrons of the paramagnetic centers and nuclear spins. 13C NMR line-width reflects the fact that the structure of the UDD surface is distorted in comparison to the 'bulk' diamond structure.",

keywords = "D. Electron paramagnetic resonance (EPR), D. Nuclear magnetic resonance (NMR)",

author = "Shames, {A. I.} and Panich, {A. M.} and W. Kempi{\'n}ski and Alexenskii, {A. E.} and Baidakova, {M. V.} and Dideikin, {A. T.} and Osipov, {V. Yu} and Siklitski, {V. I.} and E. Osawa and M. Ozawa and Vul', {A. Ya}",

note = "Funding Information: The Ioffe Institute authors acknowledge support under the Russian State Program {\textquoteleft}Fullerenes and Atomic Clusters{\textquoteright}.",

year = "2002",

month = nov,

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doi = "10.1016/S0022-3697(02)00185-3",

language = "English",

volume = "63",

pages = "1993--2001",

journal = "Journal of Physics and Chemistry of Solids",

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TY - JOUR

T1 - Defects and impurities in nanodiamonds

T2 - EPR, NMR and TEM study

AU - Shames, A. I.

AU - Panich, A. M.

AU - Kempiński, W.

AU - Alexenskii, A. E.

AU - Baidakova, M. V.

AU - Dideikin, A. T.

AU - Osipov, V. Yu

AU - Siklitski, V. I.

AU - Osawa, E.

AU - Ozawa, M.

AU - Vul', A. Ya

N1 - Funding Information: The Ioffe Institute authors acknowledge support under the Russian State Program ‘Fullerenes and Atomic Clusters’.

PY - 2002/11/1

Y1 - 2002/11/1

N2 - EPR, 13C NMR and TEM study of ultradisperse diamond (UDD) samples is reported. The compounds show a high concentration of paramagnetic centers (up to 1020 spin/g), which are due to structural defects (dangling C-C bonds) on the diamond cluster surface. The anomalous reduction in the spin-lattice relaxation time of 13C (from several hours in natural diamond to ∼ 150 ms in UDD clusters) is attributed to the interaction between the unpaired electrons of the paramagnetic centers and nuclear spins. 13C NMR line-width reflects the fact that the structure of the UDD surface is distorted in comparison to the 'bulk' diamond structure.

AB - EPR, 13C NMR and TEM study of ultradisperse diamond (UDD) samples is reported. The compounds show a high concentration of paramagnetic centers (up to 1020 spin/g), which are due to structural defects (dangling C-C bonds) on the diamond cluster surface. The anomalous reduction in the spin-lattice relaxation time of 13C (from several hours in natural diamond to ∼ 150 ms in UDD clusters) is attributed to the interaction between the unpaired electrons of the paramagnetic centers and nuclear spins. 13C NMR line-width reflects the fact that the structure of the UDD surface is distorted in comparison to the 'bulk' diamond structure.

KW - D. Electron paramagnetic resonance (EPR)

KW - D. Nuclear magnetic resonance (NMR)

UR - http://www.scopus.com/inward/record.url?scp=0036837303&partnerID=8YFLogxK

U2 - 10.1016/S0022-3697(02)00185-3

DO - 10.1016/S0022-3697(02)00185-3

M3 - Article

AN - SCOPUS:0036837303

SN - 0022-3697

VL - 63

SP - 1993

EP - 2001

JO - Journal of Physics and Chemistry of Solids

JF - Journal of Physics and Chemistry of Solids

IS - 11

ER -

Defects and impurities in nanodiamonds: EPR, NMR and TEM study

Abstract

Keywords

ASJC Scopus subject areas

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