Abstract
Hysteresis cycles of ideally soft nanoparticles have been calculated, using spin configuration dependence on the applied magnetic field. The magnetic structures have been computed using a finite-elements micromagnetic simulation software. The influence of intrinsic (exchange stiffness, magnetization) and extrinsic parameters (shape and size) on the different characteristic fields of the hysteresis loop have been studied. Nucleation, saturation, coercitive and switching fields are proved to depend on the size and magnetic correlation lengths.
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