Mathematics & Physics 2017, 10(1), 132–135 УДК 537.622 Numerical Simulation of Magnetic Microstructure in Nanocrystalline Thin Films with the Random Anisotropy Boris A. Belyaev Andrey V. Izotov Platon N. Solovev∗ Kirensky Institute of Physics SB RAS Akademgorodok, 50/38, Krasnoyarsk, 660036 Institute of Engineering Physics and Radio Electronics Siberian Federal University Svobodny, 79, Krasnoyarsk, 660041 Russia Received 20.08.2016, received in revised form 10.10.2016, accepted 14.11.2016 The magnetic structure of thin nanocrystalline films with a random distribution of magnetization easy axes was studied by means of micromagnetic modeling. <...> The dependences of the correlation function parameters of the non-uniform magnetization on the value of the external in-plane magnetic field were investigated in the wide range (6–1000 nm) of particles sizes. <...> An analysis of the obtained dependences revealed a significant difference between longitudinal (along the field) and transversal (perpendicular to the field) correlation radii of a stochastic magnetic structure. <...> The blocking effect of a fine magnetic structure—a magnetization ripple—was observed during magnetization reversal of the films. <...> Introduction Thin nanocrystalline films belong to the class of magnetically soft nanostructured materials, which properties are studied widely because of great prospects of their practical applications [1, 2]. <...> This method is based on the interpretation of microscopic properties of nanostructured ferromagnets from an analysis of the integral magnetization curve behavior. <...> Using the law of approach of the magnetization to saturation, such important characteristics of a non-uniform magnetic microstructure as a normalized dispersion dm and a correlation radius Rm of transversal components of the equilibrium magnetization are obtained [3, 4]. <...> The existence of a direct relation between correlation and microscopic parameters in nanostructured materials gives a principal opportunity to evaluate microstructural and magnetic parameters of the samples. <...> The aim of this work is to study by micromagnetic modeling the correlation between the magnetic microstructure, local ordering of magnetic moments, microstructural and magnetic properties of thin films composed of particles with randomly oriented easy axes of magnetization. ∗platon.solovev@gmail.com ⃝ Siberian Federal University. <...> All rights reserved c – 132 – Boris B. Belyaev, Andrey V. Izotov, Platon N. Solovev Numerical Simulation of Magnetic Microstructure . . . 1. <...> Modeling details We used our micromagnetic modeling software <...>