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Generalized formulation for the description of hysteresis in soft magnetic materials

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2 Author(s)
P. Nakmahachalasint ; Dept. of Electr. & Comput. Eng., Florida Univ., Gainesville, FL, USA ; K. D. T. Ngo

Presents a phenomenological formulation that broadens the range of applicability of the Basso-Bertotti hysteresis model to include soft magnetic materials with very gradual saturation, such as commercial manganese-zinc (MnZn) power ferrites. The formulation also enables the Basso-Bertotti model to better characterize both the major loop and the minor loops of these soft magnetic materials. The formulation introduces a model parameter mt that defines the transition between low fleld/minor loops and high field/major loop. An explicit expression for magnetization in term of domain-wall position was synthesized to make the hysteresis model numerically attractive. The formulation was verified by experimental data of commercial MnZn ferrites

Published in:

IEEE Transactions on Magnetics  (Volume:38 ,  Issue: 1 )