Virginia TechHenkel, M.Pleimling, Michel J.2014-05-072014-05-072008-12Henkel, M.; Pleimling, M., "Superuniversality in phase-ordering disordered ferromagnets," Phys. Rev. B 78, 224419 DOI: http://dx.doi.org/10.1103/PhysRevB.78.2244191098-0121http://hdl.handle.net/10919/47892The phase-ordering kinetics of the ferromagnetic two-dimensional Ising model with uniform bond disorder is investigated by intensive Monte Carlo simulations. Simple aging behavior is observed in the single-time correlator and the two-time responses and correlators. The dynamical exponent z and the autocorrelation exponent lambda(C) only depend on the ratio epsilon/T, where epsilon describes the width of the distribution of the disorder, whereas a more complicated behavior is found for the nonequilibrium exponent a of the two-time response as well as for the autoresponse exponent lambda(R). The scaling functions are observed to depend only on the dimensionless ratio epsilon/T. If the length scales are measured in terms of the time-dependent domain size L(t), the form of the scaling functions is in general independent of both epsilon and T. Conditions limiting the validity of this "superuniversality" are discussed.en-USIn Copyrightageingcritical exponentsferromagnetismising modelmonte carlomethodslocal scale-invariancedomain growthrandom impuritiesrandommagnetsnonequilibrium dynamicsspin-glassessystemskineticsautocorrelationmodelsphysics, condensed matterArticle - Refereedhttp://journals.aps.org/prb/abstract/10.1103/PhysRevB.78.224419https://doi.org/10.1103/PhysRevB.78.224419