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We present Monte Carlo (MC) simulation studies of phase separation in binary(AB) mixtures with bond-disorder that is introduced in two different ways: (i)at randomly selected lattice sites and (ii) at regularly selected sites. TheIsing model with spin exchange (Kawasaki) dynamics represents the segregationkinetics in conserved binary mixtures. We find that the dynamical scalingchanges significantly by varying the number of disordered sites in the casewhere bond-disorder is introduced at the randomly selected sites. On the otherhand, when we introduce the bond-disorder in a regular fashion, the systemfollows the dynamical scaling for the modest number of disordered sites. Forhigher number of disordered sites, the evolution morphology illustrates alamellar pattern formation. Our MC results are consistent with theLifshitz-Slyozov (LS) power-law growth in all the cases.

Effect of bond-disorder on the phase-separation kinetics of binary mixtures: a Monte Carlo simulation study