期刊
IEEE TRANSACTIONS ON MAGNETICS
卷 38, 期 5, 页码 3132-3134出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TMAG.2002.802419
关键词
high-frequency materials; nanocrystalline materials
The permeability of powder cores is usually modeled using a nonmagnetic grain boundary model (NMGB), which is not satisfying in the case of composites based on ground nanocrystalline ribbon, especially for particles larger than several 100 mum. An improvement of the NMGB model is proposed where both in plane and perpendicular reluctances are taken into account. This model is consistant with our experimental results as well as other authors' results in a very large range of packing fractions (30%-92%) and particle sizes (80-1000 mum).
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