Micromagnetic and Preisach analysis of the First Order Reversal Curves (FORC) diagram
Alexandru StancuFaculty of Physics, “Alexandru Ioan Cuza” University, Iasi, 6600, RomaniaChristopher R. PikeDepartment of Geology, University of California, Davis, California 95616Laurenţiu StoleriuFaculty of Physics, “Alexandru Ioan Cuza” University, Iasi, 6600, RomaniaP. PostolacheFaculty of Physics, “Alexandru Ioan Cuza” University, Iasi, 6600, RomaniaDorin CimpoesuFaculty of Physics, “Alexandru Ioan Cuza” University, Iasi, 6600, Romania
2003en
ABI
Abstract
The First Order Reversal Curve (FORC) diagrams of interacting single-domain ferromagnetic particle systems have been found experimentally to contain negative regions. In this paper, we use micromagnetic and phenomenological (Preisach-type) models to help explain the occurrence of these negative regions. In Preisach-type modeling, the position of the negative region is correlated with the sign of the mean-field interactions. In micromagnetic modeling, the position of the negative region is correlated with the spatial arrangement of the particles in the model.
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