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 correlation spectroscopy (HYSC...
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| Дата: | 2010 |
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| Автори: | , , , , , |
| Формат: | Стаття |
| Мова: | English |
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Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України
2010
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| Назва видання: | Semiconductor Physics Quantum Electronics & Optoelectronics |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/117738 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | 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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irk-123456789-1177382017-05-27T03:04:58Z 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. 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. 2010 Article 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 http://dspace.nbuv.gov.ua/handle/123456789/117738 en Semiconductor Physics Quantum Electronics & Optoelectronics Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| 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. |
| format |
Article |
| author |
Savchenko, D.V. Pöppl, A. Kalabukhova, E.N. Venger, E.F. Gadzira, M.P. Gnesin, G.G. |
| spellingShingle |
Savchenko, D.V. Pöppl, A. Kalabukhova, E.N. Venger, E.F. Gadzira, M.P. Gnesin, G.G. Intrinsic defects in nonstoichiometric B-SiC nanoparticles studied by pulsed magnetic resonance methods Semiconductor Physics Quantum Electronics & Optoelectronics |
| author_facet |
Savchenko, D.V. Pöppl, A. Kalabukhova, E.N. Venger, E.F. Gadzira, M.P. Gnesin, G.G. |
| author_sort |
Savchenko, D.V. |
| title |
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_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_sort |
intrinsic defects in nonstoichiometric b-sic nanoparticles studied by pulsed magnetic resonance methods |
| publisher |
Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України |
| publishDate |
2010 |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/117738 |
| 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. |
| series |
Semiconductor Physics Quantum Electronics & Optoelectronics |
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2023-10-18T20:30:30Z |
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