Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1483280 | Journal of Non-Crystalline Solids | 2007 | 7 Pages |
Abstract
The atomic structures of liquid Si metal and SiGe alloy in the normal and supercooled liquid states have been measured by X-ray diffraction from aerodynamically levitated and laser heated liquid droplets. The measurements covered a wide range of scattering vector Q (0.8–20 A−1) and a wide temperature range that extended into the supercooled region. The present results on liquid Si confirm earlier measurements that showed a decrease in first-shell coordination with increased supercooling. For liquid SiGe, the shoulder on the high-Q side of the first peak in the structure factor S(Q) sharpens with increased supercooling, suggesting an increase in covalent bonding and development of chemical short-range order.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Shankar Krishnan, Louis Hennet, Thomas Key, Benoit Glorieux, Marie-Louise Saboungi, David L. Price,