Frequency-dependence of Relative Permeability in Steel


A study to characterize metal plates by means of a model-based, broadband, four-point potential drop measurement technique has shown that the relative permeability of alloy 1018 low-carbon steel is complex and a function of frequency. A magnetic relaxation is observed at approximately 5 kHz. The relaxation can be described in terms of a parametric (Cole-Cole) model. Factors which influence the frequency, amplitude and breadth of the relaxation, such as applied current amplitude, sample geometry and disorder (e.g. percent carbon content and surface condition), are considered.

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@inproceedings{Bowler2005FrequencydependenceOR, title={Frequency-dependence of Relative Permeability in Steel}, author={Nicola Bowler}, year={2005} }