This paper is devoted to the determination of the equivalent anisotropy properties of polycrystalline magnetic materials, modelled by an assembly of monocrystalline grains with a stochastic spatial distribution of easy axes. The mathematical theory of Γ-convergence is applied to homogenize the anisotropic term in the Gibbs free energy. The procedure is validated focusing on the micromagnetic computation of reversal processes in polycrystalline magnetic thin films. © 2011 Elsevier B.V. All rights reserved.
Homogenization of random anisotropy properties in polycrystalline magnetic materials / Bottauscio, Oriano; Chiadò Piat, Valeria; Eleuteri, Michela; Lussardi, Luca; Manzin, Alessandra. - In: PHYSICA. B, CONDENSED MATTER. - ISSN 0921-4526. - 407:(2012), pp. 1417-1419. [10.1016/j.physb.2011.06.085]
Homogenization of random anisotropy properties in polycrystalline magnetic materials
ELEUTERI, Michela;
2012
Abstract
This paper is devoted to the determination of the equivalent anisotropy properties of polycrystalline magnetic materials, modelled by an assembly of monocrystalline grains with a stochastic spatial distribution of easy axes. The mathematical theory of Γ-convergence is applied to homogenize the anisotropic term in the Gibbs free energy. The procedure is validated focusing on the micromagnetic computation of reversal processes in polycrystalline magnetic thin films. © 2011 Elsevier B.V. All rights reserved.
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