Micromagnetic analysis of the transverse susceptibility of particulate systems

Abstract The effect of the second anisotropy constant K 2 in the series expansion of the uniaxial magneto-crystalline free energy on the transverse susceptibility (TS) is analysed. A generalized 2D Stoner–Wohlfarth model and a micromagnetic 3D model based on Landau–Lifshitz–Gilbert equation approach are used in this analysis. The effect of K 2 on the TS is discussed for particle distributions.