Influence of alloying additions (Mo, Mn, Co) on the magnetic properties of FeSiB amorphous alloys

 

Chem. Met. Alloys 1 (2008) 333-337

 

Łukasz MADEJ, Lidiya BEDNARSKA, Viktor NOSENKO, Bogdan KOTUR, Artur CHROBAK, Grzegorz HANECZOK

 

 

In the present paper the magnetic permeability μ, magnetic after-effects Δμ/μ, saturation magnetization μ0MS, Curie temperature TC, primary crystallization temperature TX1 and magnetostriction coefficients λ were examined for a group of amorphous alloys, i.e. Fe80Si6B14 and Fe75XSi6B14 (X = Mo5, Mo2.5Mn2.5, Mo2.5Co2.5). It was shown that these alloying additions cause a decrease of the Curie temperature, saturation magnetization, magnetic permeability, magnetic after-effects and magnetostriction coefficients, and an increase of the primary crystallization temperature with respect to Fe80Si6B14. The observed decrease of both magnetostriction coefficients – saturation magnetostriction and volume magnetostriction, is correlated with the decrease of the Curie temperature. Cobalt and manganese atoms influence the crystallization temperature in the same way as molybdenum, which means that the diffusion processes responsible for crystallization are not enough sensitive to this kind of alloying addition.

 

 

Saturation magnetization μ0MS versus temperature T for some of the examined alloys.

 

Keywords

Amorphous alloys / Magnetic properties / Magnetostriction