Raman Identification of Onion-Like Carbon
Научная публикация
| Общее |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Журнал |
Carbon
ISSN: 0008-6223
, E-ISSN: 1873-3891
|
| Вых. Данные |
Год: 1998,
Том: 36,
Номер: 5-6,
Страницы: 821-826
Страниц
: 6
DOI:
10.1016/S0008-6223(98)00014-1
|
| Ключевые слова |
A. Diamond, C. electron microscopy, C. Raman spectroscopy, D. lattice dynamics |
| Авторы |
Obraztsova E.D.
1
,
Fujii M.
2
,
Hayashi S.
2
,
Kuznetsov V.L.
3
,
Butenko Y.V.
3
,
Chuvilin A.L.
3
|
| Организации |
| 1 |
General Physics Institute (RAS), 38 Vavilov Street, 117942 Moscow, Russia
|
| 2 |
Department of Electrical and Electronics Engineering, Faculty of Engineering, Kobe University, Rokko, Nada, Kobe 657, Japan
|
| 3 |
Boreskov Institute of Catalysis (RAS), 630090 Novosibirsk, Russia
|
|
A specific Raman spectrum of carbon spherical shells (onions) synthesized by annealinginduced (T = 1800 K) chipping off the outer carbon layers from 5-nm size diamond particles has been observed. It shows a clearly seen band at 1572 cm−1. Its downshift from the position 1582 cm−1 (known for a pure graphite) is interpreted as an influence of shell curvature. The summary contribution of the shells constituting the 5-nm diameter onion is estimated. A narrowness (FWHM = 15 cm−1) of the first order Raman band of onions together with a dominance of the peak at 2712 cm−1 (FWHM = 65 cm−1) in their second order spectrum point to a high degree of structural perfection of a graphitic network in shells.