Abstract
The kinetics of crystallization from the melt is investigated for hcp Mg employing molecular dynamics simulations based on a recently developed embedded-atom-method interatomic potential. The interface mobility , defined as the constant of proportionality between interface velocity and undercooling, is calculated for the three high-symmetry orientations (0001), , and . The magnitudes of the interface mobilities are found to lie in the range of . The mobilities and are found to be of comparable magnitude and approximately 1.7 times larger than . The calculated dependence of on interface normal is discussed within the framework of the kinetic density-functional theory (DFT) formulation of Mikheev and Chernov.
- Received 31 August 2006
DOI:https://doi.org/10.1103/PhysRevB.75.012103
©2007 American Physical Society