Measurements of magnetic circuit characteristics for comprehension of intrinsic magnetic properties of materials from surface inspection
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A transfer function is presented for calculating magnetic field and flux density inside a test material as a result of surface measurement. By considering flux leakage, we introduce a parameter η, called the leakage coefficient, which can be experimentally determined. It is introduced into the equations to make the transfer function more practical. The distribution of field inside a test material is then discussed in accordance with a surfacemagnetic charge model.
The following article appeared in Journal of Applied Physics 73 (1993): 5620 and may be found at http://dx.doi.org/10.1063/1.353616.