Intrinsic defects in nonstoichiometric B-SiC nanoparticles studied by pulsed magnetic resonance methods
Nonstoichiometric B-SiC nanoparticles (np-SiC) have been studied by electron
 paramagnetic resonance (EPR) and pulsed magnetic resonance methods including field
 swept electron spin echo (FS ESE), pulsed electron nuclear double resonance (ENDOR)
 and hyperfine sublevel correl...
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| Published in: | Semiconductor Physics Quantum Electronics & Optoelectronics |
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| Date: | 2010 |
| Main Authors: | , , , , , |
| Format: | Article |
| Language: | English |
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Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України
2010
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| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/117738 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Intrinsic defects in nonstoichiometric B-SiC nanoparticles studied by pulsed magnetic resonance methods/ D.V. Savchenko, A. Pöppl, E.N. Kalabukhova, E.F. Venger, M.P. Gadzira, G.G. Gnesin // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2010. — Т. 13, № 1. — С. 43-50. — Бібліогр.: 25 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862744421468995584 |
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| author | Savchenko, D.V. Pöppl, A. Kalabukhova, E.N. Venger, E.F. Gadzira, M.P. Gnesin, G.G. |
| author_facet | Savchenko, D.V. Pöppl, A. Kalabukhova, E.N. Venger, E.F. Gadzira, M.P. Gnesin, G.G. |
| citation_txt | Intrinsic defects in nonstoichiometric B-SiC nanoparticles studied by pulsed magnetic resonance methods/ D.V. Savchenko, A. Pöppl, E.N. Kalabukhova, E.F. Venger, M.P. Gadzira, G.G. Gnesin // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2010. — Т. 13, № 1. — С. 43-50. — Бібліогр.: 25 назв. — англ. |
| collection | DSpace DC |
| container_title | Semiconductor Physics Quantum Electronics & Optoelectronics |
| description | Nonstoichiometric B-SiC nanoparticles (np-SiC) have been studied by electron
paramagnetic resonance (EPR) and pulsed magnetic resonance methods including field
swept electron spin echo (FS ESE), pulsed electron nuclear double resonance (ENDOR)
and hyperfine sublevel correlation spectroscopy (HYSCORE). Four ESE signals related
to the paramagnetic centers labeled D1, D2, D3, D4 with g = 2.0043, g = 2.0029,
g = 2.0031, g = 2.0037 were resolved in FS ESE spectrum due to their different spin
relaxation times. As deduced from the study of the superhyperfine structure of the D2
defect by FS ESE, pulse ENDOR and HYSCORE methods the dominant paramagnetic
center is a carbon vacancy (Vc) localized in B-SiC crystalline phase of the np-SiC. The
parameters of the D2 center coincide with those found for the Vc in np-SiC obtained by
laser pyrolysis method. Three other defects were identified by comparison of their EPR
parameters with the microstructure of the np-SiC. The D1 defect was attributed to the Vc
vacancy located in a-SiC crystalline phase. The D3 defect is identified with the carbon
dangling bonds located in the carbon excess phase. The D4 defect was assigned to a
threefold-coordinated Si atom bonded with one nitrogen atom, resulting in the formation
of the local bonding Si-Si2N configuration in a-Si3N4 phase.
|
| first_indexed | 2025-12-07T20:35:15Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-117738 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 1560-8034 |
| language | English |
| last_indexed | 2025-12-07T20:35:15Z |
| publishDate | 2010 |
| publisher | Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України |
| record_format | dspace |
| spelling | Savchenko, D.V. Pöppl, A. Kalabukhova, E.N. Venger, E.F. Gadzira, M.P. Gnesin, G.G. 2017-05-26T14:37:57Z 2017-05-26T14:37:57Z 2010 Intrinsic defects in nonstoichiometric B-SiC nanoparticles studied by pulsed magnetic resonance methods/ D.V. Savchenko, A. Pöppl, E.N. Kalabukhova, E.F. Venger, M.P. Gadzira, G.G. Gnesin // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2010. — Т. 13, № 1. — С. 43-50. — Бібліогр.: 25 назв. — англ. 1560-8034 PACS 73.22.-f, 76.30.-v, 76.70.Dx https://nasplib.isofts.kiev.ua/handle/123456789/117738 Nonstoichiometric B-SiC nanoparticles (np-SiC) have been studied by electron
 paramagnetic resonance (EPR) and pulsed magnetic resonance methods including field
 swept electron spin echo (FS ESE), pulsed electron nuclear double resonance (ENDOR)
 and hyperfine sublevel correlation spectroscopy (HYSCORE). Four ESE signals related
 to the paramagnetic centers labeled D1, D2, D3, D4 with g = 2.0043, g = 2.0029,
 g = 2.0031, g = 2.0037 were resolved in FS ESE spectrum due to their different spin
 relaxation times. As deduced from the study of the superhyperfine structure of the D2
 defect by FS ESE, pulse ENDOR and HYSCORE methods the dominant paramagnetic
 center is a carbon vacancy (Vc) localized in B-SiC crystalline phase of the np-SiC. The
 parameters of the D2 center coincide with those found for the Vc in np-SiC obtained by
 laser pyrolysis method. Three other defects were identified by comparison of their EPR
 parameters with the microstructure of the np-SiC. The D1 defect was attributed to the Vc
 vacancy located in a-SiC crystalline phase. The D3 defect is identified with the carbon
 dangling bonds located in the carbon excess phase. The D4 defect was assigned to a
 threefold-coordinated Si atom bonded with one nitrogen atom, resulting in the formation
 of the local bonding Si-Si2N configuration in a-Si3N4 phase. D.V. Savchenko and A. Pöppl acknowledge financial
 support by the DFG (grant PO 426/6-1).
 Authors are grateful to the Joint Use Center of
 Scientific Equipment “EPR spectroscopy”, NAS of
 Ukraine. en Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України Semiconductor Physics Quantum Electronics & Optoelectronics Intrinsic defects in nonstoichiometric B-SiC nanoparticles studied by pulsed magnetic resonance methods Article published earlier |
| spellingShingle | Intrinsic defects in nonstoichiometric B-SiC nanoparticles studied by pulsed magnetic resonance methods Savchenko, D.V. Pöppl, A. Kalabukhova, E.N. Venger, E.F. Gadzira, M.P. Gnesin, G.G. |
| title | Intrinsic defects in nonstoichiometric B-SiC nanoparticles studied by pulsed magnetic resonance methods |
| title_full | Intrinsic defects in nonstoichiometric B-SiC nanoparticles studied by pulsed magnetic resonance methods |
| title_fullStr | Intrinsic defects in nonstoichiometric B-SiC nanoparticles studied by pulsed magnetic resonance methods |
| title_full_unstemmed | Intrinsic defects in nonstoichiometric B-SiC nanoparticles studied by pulsed magnetic resonance methods |
| title_short | Intrinsic defects in nonstoichiometric B-SiC nanoparticles studied by pulsed magnetic resonance methods |
| title_sort | intrinsic defects in nonstoichiometric b-sic nanoparticles studied by pulsed magnetic resonance methods |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/117738 |
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