The effect of particle size distribution on the field and temperature dependence of the hysteresis loop features like coercivity (H C ), remanence (M R ), and blocking temperature (T B ) is simulated for an ensemble of single domain ferromagnetic nanoparticles with uniaxial anisotropy. Our simulations are based on the two-state model for T < T B and the metropolis Monte-Carlo method for T > T B . It is found that the increase in the grain size significantly enhances H C and T B . The presence of interparticle exchange interaction in the system suppresses H C but causes M R to significantly increase. Our results show that the parameters associated with the particle size distribution (D d,δ ) such as the mean particle size d and standard-deviation δ play key roles in the magnetic behavior of the system.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.