Monte Carlo simulation of subsurface ordering kinetics in an fcc alloy model

Article

关键词: ANTIPHASE DOMAIN GROWTH;    SPINODAL DECOMPOSITION;    PHASE-SEPARATION;    SEGREGATION PROFILES;    SURFACE SEGREGATION;    DISORDER TRANSITION;    BINARY-ALLOYS;    ISING-MODEL;    CU3AU;    DIFFUSION;   

DOI  :  10.1103/PhysRevB.64.125412

来源: SCIE

【 摘 要 】

Within the atom-vacancy exchange mechanism in a nearest-neighbor interaction model we investigate the kinetics of surface-induced ordering processes close to the (001) surface of an fcc A(3)B alloy. After a sudden quench into the ordered phase with a final temperature above the ordering spinodal, T-f>T-sp, the early time kinetics is dominated by a segregation front which propagates into the bulk with nearly constant velocity. Below the spinodal, T-f

【 授权许可】

Free