| Issue |
Europhys. Lett.
Volume 41, Number 2, January II 1998
|
|
|---|---|---|
| Page(s) | 225 - 230 | |
| Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
| DOI | https://doi.org/10.1209/epl/i1998-00134-y | |
| Published online | 01 September 2002 | |
Vibrational analysis of compositional disorder in amorphous silicon carbon alloys
1
Dipartimento di Scienze Chimiche, V.le A.Doria 6, Catania 95125, Italy
2
Dipartimento di Fisica and Istituto Nazionale per la Fisica della Materia,
Corso Italia 57, Catania, 95123 Italy
Received:
21
May
1997
Accepted:
21
November
1997
Raman and Infrared spectroscopies have been used to characterise the
compositional disorder in a-
alloys. Samples with different carbon
concentration have been prepared by ion implantation of carbon into a silicon
matrix and have been annealed at different temperatures in order to follow
the evolution of disorder. The obtained results show an increase of the magnitude
of compositional disorder with carbon concentration and a reduction of such
a disorder upon thermal treatments up to 
where it vanish
during the amorphous-to-crystalline phase transition.
A quantitative interpretation of the compositional disorder has been given
as a function of the carbon concentration and annealing temperature.
PACS: 78.30.-j – Infrared and Raman spectra / 78.30.Ly – Disordered solids / 61.43.Dq – Amorphous semiconductors, metals, and alloys
© EDP Sciences, 1998
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