Magnetic characterization of CoFe-based glass covered amorphous wires at high frequency

G. Ababei, H. Chiriac

Abstract

Many metallic glasses are well known as soft magnetic materials, because of their amorphous structure which presumes the absence of magneto-crystalline anisotropy. It has been shown that amorphous materials are not fully isotropic, but rather have small induced anisotropies because of the cooling strains. The ferromagnetic resonance is an important tool for characterizing the magnetic materials because of the small penetration depth of the microwave radiation used in such experiments. The aim of this paper is to present a new method for magnetic properties study by FMR for as-cast CoFe-based glass covered amorphous wires, employing a vector network analyzer and microwave guide transmission line. The method can be also employed and for other magnetic sample like as thin layers and nanowire arrays.

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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