Abstract

Nowadays, an intensive research of new magnetic materials with high frequency permeability has been stimulated by the demand for electronic devices, such as microinductors, transformers and magnetic recording heads, operating in the GHz-frequency range [1]. Soft magnetic nanogranular films consisting of magnetic grains embedded in an insulating matrix are appropriate candidates for these applications due to: (a) the intrinsic maze structure of nanogranular films leads to high resistivity which reduces eddy current losses, (b) the ferromagnetic resonance (FMR) can be shifted to higher frequencies in materials with high saturation magnetization and high anisotropy field. Research on nanogranular ferromagnetic FeCoAlN films is presented.

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