High-Frequency Magnetics

  • Makoto SoneharaEmail author
Part of the Engineering Materials book series (ENG.MAT.)


When the magnetic material is used as the high-frequency devices such as RF inductor, the domain walls do not move; so, a soft magnetic material with an uniaxial magnetic anisotropy is often used in the case. A magnetic field is applied in the direction of the hard axis, and magnetization rotation is used in the soft magnetic material. In the soft magnetic material, not only the higher real part and the lower imaginary part of the complex permeability but also the electrical resistivity should be high. For example, when it is used for the magnetic core of an inductor, eddy current loss increases when the electric resistivity of the material is low. In addition, we also need various resources such as reducing the eddy current loss by putting a slit in the magnetic material in order to apply it in RF devices.


RF inductor Uniaxial magnetic anisotropy Magnetic thin film Power inductor Magnetic composite material Eddy current loss 


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© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.Shinshu UniversityNaganoJapan

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