A challenging hysteresis operator for the simulation of Goss-textured magnetic materials

•New 2-D hysteresis operator for the simulation of Goss-textured ferromagnets at macromagnetic scale-length.•The operator is derived from the classic Stoner–Wohlfarth but the in-plane magnetic anisotropy is cubic.•The single hysteron model is defined exploiting only one “moving” hysteresis operator....

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Veröffentlicht in:Journal of magnetism and magnetic materials 2017-06, Vol.432, p.14-23
Hauptverfasser: Cardelli, Ermanno, Faba, Antonio, Laudani, Antonino, Pompei, Michele, Quondam Antonio, Simone, Fulginei, Francesco Riganti, Salvini, Alessandro
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Sprache:eng
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Zusammenfassung:•New 2-D hysteresis operator for the simulation of Goss-textured ferromagnets at macromagnetic scale-length.•The operator is derived from the classic Stoner–Wohlfarth but the in-plane magnetic anisotropy is cubic.•The single hysteron model is defined exploiting only one “moving” hysteresis operator.•Results are especially promising for FEM based calculations, where the magnetization state in each point must be recalculated at each time step.•Numerical accuracy is proved by comparison with measured data. A new hysteresis operator for the simulation of Goss-textured ferromagnets is here defined. The operator is derived from the classic Stoner–Wohlfarth model, where the anisotropy energy is assumed to be cubic instead of uniaxial, in order to reproduce the magnetic behavior of Goss textured ferromagnetic materials, such as grain-oriented Fe–Si alloys, Ni–Fe alloys, and Ni–Co alloys. A vector hysteresis model based on a single hysteresis operator is then implemented and used for the prediction of the rotational magnetizations that have been measured in a sample of grain-oriented electrical steel. This is especially promising for FEM based calculations, where the magnetization state in each point must be recalculated at each time step. Finally, the computed loops, as well as the magnetic losses, are compared to the measured data.
ISSN:0304-8853
1873-4766
DOI:10.1016/j.jmmm.2017.01.068