High-pressure phases of amorphous and crystalline silicon
PHYSICAL REVIEW B, cilt.67, sa.21, 2003 (SCI-Expanded)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 67 Sayı: 21
- Basım Tarihi: 2003
- Doi Numarası: 10.1103/physrevb.67.212101
- Dergi Adı: PHYSICAL REVIEW B
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Abdullah Gül Üniversitesi Adresli: Hayır
Özet
We study pressure-induced phase transitions in amorphous silicon and crystalline diamond silicon from Gibbs free energies considerations using ab initio total energy calculations. We predict a pressure-induced crystallization of the amorphous network at 2.5 GPa and a first order amorphous to amorphous phase transition at 9 GPa. Furthermore, we find a pressure-induced high density amorphization of crystalline diamond silicon around 15 GPa.