Growth of different faces in a body centered cubic lattice: a case of the phase-field-crystal modeling

TL;DR

This study uses a hyperbolic phase field crystal model to analyze how different crystallographic faces of a BCC lattice grow, revealing anisotropic growth velocities and regimes during solidification.

Contribution

It introduces a hyperbolic phase field crystal model that accounts for atomic density and flux, enabling the study of kinetic anisotropy in BCC crystal growth.

Findings

Velocity sequences vary across different faces.

Model captures slow and rapid interface propagation regimes.

Results align with known crystallographic growth behaviors.

Abstract

Interface energy and kinetic coefficient of crystal growth strongly depend on the face of the crystalline lattice. To investigate the kinetic anisotropy and velocity of different crystallographic faces we use the hyperbolic (modified) phase field crystal model which takes into account atomic density (as a slow thermodynamic variable) and atomic flux (as a fast thermodynamic variable). Such model covers slow and rapid regimes of interfaces propagation at small and large driving forces during solidification. In example of BCC crystal lattice invading the homogeneous liquid, dynamical regimes of advancing front propagating along the selected crystallographic directions are studied. The obtained velocity and the velocity sequences for different faces are compared with known results.