High Frequency Core Loss and Initial Permeability of Ferromagnetic Amorphous Ribbons
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概要
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For the purpose of practical applications of the amorphous Fe_5Co_<70>Si_<15>B_<10> ribbon to high frequency magnetic material, the initial permeability μ_i, the loss factor tan δ as well as the quality factor were measured in the frequency region from 3 kHz to 70 kHz by using a Maxwell Bridge. μ_i is almost independent of the intensity of magnetic field and increases monotonically with a decrease of the frequency. tan δ increases linearly with an increase of the frequency in the initial permeability region. tan δ/μ_i is a good linear function of the square of the thickness and increase with an increase of the frequency. From these experiments, it was found that among losses, the eddy current loss is most essential in the high frequency region in the amorphous ribbons.
- 東北大学の論文
著者
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Arai Kenichi
Research Institute Of Electrical Communication Tohoku University
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Fujimori Hiroyasu
The Research Institute For Iron Steel And Other Metals Tohoku University
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Yamada Masamichi
Research Institute Of Electrical Communication Tohoku University
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Masumoto Tsuyoshi
The Research Institute For Iron Steel And Other Metals Tohoku University
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