Shape Dependent Coercivity Simulation of a Spherical Barium Ferrite (S-BaFe) Particle with Uniaxial Anisotropy

摘要: The coercivity of a single 27 nm-spherical barium ferrite (S-BaFe) particle was simulated using three models: 1) Gibbs free energy (GFE), 2) Landau-Lifshitz-Gilbert (LLG), and 3) Stoner-Wohlfarth (S-W). Spherically hexagonally shaped particles were used in the GFE LLG simulations to investigate with different shape anisotropies. effect not included S-W model. It found that models spherical resulted higher than hexagonal both shapes having same diameter. estimated model approximately as for spherical-shape models, which indicates has no significant on particle’s at nanoscale.