Abstract
Silicon carbide layers were grown on a Si substrate at a temperature below 1100 °C and pressure of 105Pa. The synthesis was carried out in a tube furnace through cyclic heating process using methane as a carbon source and Sm-Co mixed powder as a solvent. The growth of SiC from rare earth Sm-based solvent is an innovative approach, and Co can promote the formation of solvent during the growth process. The structural and compositional analyses were carried out using X-ray diffraction, electron probe micro-analyzer, scanning electron microscopy and transmission electron microscopy. Results indicated that β-SiC was successfully fabricated on Si (1 1 1) substrate. The heterogeneous nucleation of β-SiC was found to be observed initially at the edge of triangle-shaped sites on Si (1 1 1) surface that formed due to the existence of Co, and then grew and expanded to form β-SiC film. The growth process of SiC via vapour-liquid-solid mechanism was also discussed in this study.
Original language | English |
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Pages (from-to) | 634-646 |
Number of pages | 13 |
Journal | Superlattices and Microstructures |
Volume | 50 |
Issue number | 6 |
DOIs | |
Publication status | Published - 2011 Dec |
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Electrical and Electronic Engineering