Journal
IEEE MAGNETICS LETTERS
Volume 12, Issue -, Pages -Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LMAG.2021.3110488
Keywords
Mathematical model; Magnetization; Numerical models; Interpolation; Damping; Computational modeling; Magnetic moments; Nanomagnetics; hysteresis modeling; magnetization dynamics; numerical methods
Funding
- Romanian Ministry of Research, Innovation and Digitization, CNCS/CCCDI UEFISCDI within PNCDI III [PN-III-P4-ID-PCE-2020-1946]
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This numerical model of magnetization dynamics is based on the Stoner-Wohlfarth model and Landau-Lifshitz-Gilbert equation, using coefficients for interpolation of equilibrium time and a linear system of equations for angular component variation. The dynamic Stoner-Wohlfarth model is employed for accurate replication of macrospin dynamics with improved numerical efficiency under constant or variable external magnetic fields.
In this letter, we present a numerical model of magnetization dynamics that is based on the classical Stoner-Wohlfarth model and the Landau-Lifshitz-Gilbert equation. This approach uses a series of coefficients for the interpolation of the time needed by the magnetic moment to reach equilibrium and a linear system of equations for the variation in time of the angular components of the magnetization. The dynamic Stoner-Wohlfarth model will be used to accurately replicate the dynamic behavior of macrospins with significantly improved numerical efficiency when a constant or variable external magnetic field is applied.
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