Crossover effects in the bond-diluted Ising model in three dimensions

Abstract

We investigate by Monte Carlo simulations the critical properties of the three-dimensional bond-diluted Ising model. The phase diagram is determined by locating the maxima of the magnetic susceptibility and is compared to mean-field and effective-medium approximations. The calculation of the size-dependent effective critical exponents shows the competition between the different fixed points of the model as a function of the bond dilution.

LaTeX file, 4 pages, 5 eps figures, Proceeding CCP 2001 Aachen, to appear in Comp. Phys. Comm

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