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Combining Mager and Steinmetz: The Effect of Grain Size and Maximum Induction on Hysteresis Energy Loss

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3 Author(s)
Rodrigues, D.L. ; Dept. Eng. Metalurgica e de Mater., Univ. de Sao Paulo, Sao Paulo, Brazil ; Silveira, J.R.F. ; Landgraf, F.J.G.

Twelve samples with different grain sizes were prepared by normal grain growth and by primary recrystallization, and the hysteresis dissipated energy was measured by a quasi-static method. Results showed a linear relation between hysteresis energy loss and the inverse of grain size, which is here called Mager's law, for maximum inductions from 0.6 to 1.5 T, and a Steinmetz power law relation between hysteresis loss and maximum induction for all samples. The combined effect is better described by a Mager's law where the coefficients follow Steinmetz law.

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Magnetics, IEEE Transactions on  (Volume:47 ,  Issue: 9 )