Linear and non-linear energy barriers in systems of interacting single-domain ferromagnetic particles |
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Authors: | Iulian Petrila Ilie BodaleCristian Rotarescu Alexandru Stancu |
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Institution: | Alexandru Ioan Cuza University of Iasi, Department of Physics & CARPATH, Bd. Carol I, nr. 11, Iasi, 700506, Romania |
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Abstract: | A comparative analysis between linear and non-linear energy barriers used for modeling statistical thermally-excited ferromagnetic systems is presented. The linear energy barrier is obtained by new symmetry considerations about the anisotropy energy and the link with the non-linear energy barrier is also presented. For a relevant analysis we compare the effects of linear and non-linear energy barriers implemented in two different models: Preisach-Néel and Ising-Metropolis. The differences between energy barriers which are reflected in different coercive field dependence of the temperature are also presented. |
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Keywords: | Energy barrier Magnetic anisotropy Ising model Preisach-Né el model Stoner-Wohlfarth model |
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