Numerical Simulation of Magnetic Microstructure in Nanocrystalline Thin Films with the Random Anisotropy

摘要

The magnetic structure of thin nanocrystalline films with a random distribution of magnetization easyaxes was studied by means of micromagnetic modeling. The dependences of the correlation functionparameters of the non-uniform magnetization on the value of the external in-plane magnetic field wereinvestigated in the wide range (6–1000 nm) of particles sizes. An analysis of the obtained dependencesrevealed a significant difference between longitudinal (along the field) and transversal (perpendicular tothe field) correlation radii of a stochastic magnetic structure. The blocking effect of a fine magneticstructure—a magnetization ripple—was observed during magnetization reversal of the films.