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Wu Q.,National Center for Quality Supervision and Testing of Magnetic Materials and Products Zhejiang | Wu Q.,Ningbo Institute of Materials Technology and Engineering | Xiao X.-F.,National Center for Quality Supervision and Testing of Magnetic Materials and Products Zhejiang | Gu X.-J.,National Center for Quality Supervision and Testing of Magnetic Materials and Products Zhejiang | And 3 more authors.
Jiliang Xuebao/Acta Metrologica Sinica | Year: 2010

The complex permeability of NiZn ferrite magnetic cores in various sizes are measured at frequency from 10 MHz to 110 MHz by shorting coaxial cavity. It is shown that the complex permeability is independent of the diameter ratio, while dependent on the height of magnetic cores in a certain range. Moreover, μ' and μ" both decrease when the height of magnetic cores increase. It may be related to the effect of eddy current at high frequency, which is proved by ferromagnetics theory. Source

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