Determination of the equivalent anisotropy properties of polycrystalline magnetic materials: theoretical aspects and numerical analysis

Luca Lussardi, Michela Eleuteri, Oriano Bottauscio, Valeria Chiadò Piat, Alessandra Manzin

Risultato della ricerca: Contributo in rivistaArticolo in rivistapeer review

2 Citazioni (Scopus)

Abstract

The aim of this paper is the determination of the equivalent anisotropy properties of polycrystalline magnetic materials, modeled as an assembly of monocrystalline grains with a stochastic spatial distribution of easy axes. The theory of Gamma-convergence is here adopted to homogenize the anisotropic contribution in the energy functional and derive the equivalent anisotropy properties. The reliability of this approach is investigated focusing on the computation of the static hysteresis loops of polycrystalline magnetic thin films, starting from the numerical integration of the Landau–Lifshitz–Gilbert equation.
Lingua originaleEnglish
pagine (da-a)1217-1233
Numero di pagine17
RivistaMathematical Models and Methods in Applied Sciences
Volume23
DOI
Stato di pubblicazionePubblicato - 2013
Pubblicato esternamente

Keywords

  • Homogenization
  • Polycrystalline magnetic materials
  • Random anisotropy

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