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Measurements and modeling of hysteresis in magnetic materials under the action of an orthogonal bias field

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2 Author(s)
Bi, Y. ; Ames Lab., Iowa State Univ., Ames, IA, USA ; Jiles, D.C.

The effect of an orthogonal dc bias field on hysteresis in isotropic magnetic materials under the action of an ac exciting field was investigated. The experimental results indicated that the orthogonal field rotated the hysteresis loops on the BH plane and reduced the enclosed area. As a result, the effective permeability, hysteresis loss, coercivity and remanence decreased with increasing orthogonal bias field. By including the orthogonal field in the anhysteretic model equation and incorporating a variable reversibility coefficient, the Jiles-Atherton hysteresis model was extended to describe the behavior of magnetic materials under the action of an orthogonal bias field. Using finite element modeling for evaluating the effective internal orthogonal field, the modeled hysteresis curve showed quantitative agreement with experimental results

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Magnetics, IEEE Transactions on  (Volume:35 ,  Issue: 5 )