COMPUTATIONAL STUDY OF EFFECTS OF UNIAXIAL COMPRESSION DURING PROCESSES OF SPINODAL DECOMPOSITION

We present a computational study on the effects of a uniaxial compress ion with compression ratio 1/2 on the-ordering processes via spinodal decomposition (SD), by numerically integrating the time-dependent Ginz burg-Landau equation. We investigate the pattern growth and two-dimens ional structure factors both after a compression in the intermediate s tage SD and after a compression in the late stage SD. The results indi cate that the compression in the intermediate stage SD causes the phas e-separated structure to orient with its interfaces in the direction p arallel to the compression axis, and that the compression in the late stage SD causes the phase-separated structure to orient with its inter faces in the direction perpendicular to the compression axis.